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Who handles complaints against the police?

By William Downs

Who handles complaints against the police?

A member of the public can make a complaint if they are dissatisfied with the police. 

There are three crucial actors in the police complaints system:

  • Professional standards departments (PSDs) are specialist teams based within every police force in England and Wales. They are responsible for handling most complaints for their force.

  • The Independent Office for Police Conduct (IOPC) is an independent body that oversees the police complaints system. It also conducts independent investigations into some of the most serious police complaints and conduct matters.

  • Local policing bodies (either the police and crime commissioner or the deputy mayor for policing and crime, depending on the area) are responsible for monitoring their force’s complaint handling and conducting some complaint reviews.













Law Enforcement Tools to Detect, Document, and Communicate Use of Service Weapons

By Steven Schuetz, et al.

  Context Service weapon activity, including instances where an officer’s firearm is drawn, pointed, or discharged, plays an important role in understanding events transpiring during a police–public encounter. Detection, documentation, and communication of these events in a way that is accurate, timely, and dependable is vital for enhancing transparency and accountability of law enforcement service weapon use. About this Report The National Institute of Justice (NIJ) requested the Criminal Justice Technology Testing and Evaluation Center (CJTTEC) to investigate the landscape of commercially available and emerging technologies that could meet this need. CJTTEC conducted a review of technologies capable of detecting when a service weapon has been unholstered, pointed, or discharged; documenting when a law enforcement officer discharges their service weapon (or initiating documentation such as body-worn camera (BWC) recordings in such incidents); and communicating the information to dispatchers. CJTTEC’s methodology to understand this technology landscape included secondary research (e.g., reviewing patents, trade literature, press releases, news articles, and publications) and primary research with technology experts, product representatives, and researchers. This brief provides a high-level summary of technology systems capable of documenting, detecting, and communicating service weapon activity, focusing specifically on technology integrated into or onto the weapon, in a holster, in a BWC, in a wearable device, or in environmental sensing tools. Conclusion Although no single commercially available tool is capable of detecting, documenting, and communicating service weapon activity, law enforcement agencies may be able to rely on a suite of products to help them address these needs.  Key Takeaways ¡ Agencies are facing increased pressure to document service weapon activity. From 2015 through 2020, on average, an estimated 1,769 people were injured annually—979 fatally and 790 nonfatally— from shootings by police in the United States.1 Because of the impact that officer-involved shootings (OISs) have on the community, law enforcement agencies are facing increased public pressure and policy mandates to document service weapon activity. ¡ There is a need for tools or technologies that can objectively detect, document, and communicate service weapon activity. OISs are stressful incidents that can occur quickly and under poor visual circumstances, which can impact accurate documentation of events. Further, obtaining reliable service weapon activity data can be challenging because of noncompliance with body-worn camera (BWC) policies, lack of BWCs, or inaccurate witness and officer accounts. ¡ There is no single commercially available product that meets service weapon activity needs. No single product can currently (1) detect service weapon activity, such as recording actual shots fired in an incident involving law enforcement weapons; (2) document the activity, such as initiating BWC recordings; and (3) communicate information about service weapon activity to police dispatchers. ¡ Agencies can rely on a suite of products to address these needs or choose specific products, each with strengths and limitations. Available technologies may be integrated into or onto the weapon, in a holster, in a BWC, in a wearable device, or in environmental sensing tools. Weapon-integrated tools offer the most functionality to detect and document multiple types of service weapon activity during a use-of-force incident, but many of these products, such as those developed by Armaments Research Company and Yardarm, are not commercially available. These products often lack the capability to communicate updates in real-time with dispatch. Holster-integrated tools can sense officer unholstering activity, activate BWC, and communicate with dispatch, but they cannot detect activity related to pointing or firing a weapon. BWCs, activated by multiple types of triggers, can document audio and video of the incident and communicate with dispatch, but they cannot specifically detect officer firearm activities (e.g., weapon unholstering, pointing, gunshot detection). Wearable devices can detect officer firearm activities, document metadata, and communicate with dispatch, but most products are still in a development phase for law enforcement applications. Environmental sensing tools may detect and document activities transpiring within a certain area, including shots fired in an incident, and communicate information to dispatch, but they cannot detect or attribute gunshot activities specifically to an officer's service weapon. ¡ Technology advancements and independent testing, evaluation, and implementation research are needed to accelerate adoption. Technology developers are currently working through several technical hurdles and are leveraging insights from BWC to improve technology uptake. Some commercially available products have been evaluated for performance, but more studies are needed as technologies are further developed and released into the market.  

Criminal Justice Testing (and Evaluation Consortium, 2024. 15p.

Artificial Intelligence in the Criminal Justice System.  Demystifying artificial intelligence, its applications, and potential risks 

By James Redden; Molly O'Donovan Dix

This technology brief is the first in a four-part series that explores artificial intelligence (AI) applications within the criminal justice system. This first brief frames AI, defines common AI terms, and offers a mental model for identifying AI use cases within the criminal justice system. While this brief provides examples of how AI might bring significant benefit to the criminal justice system, it also highlights risks that decision makers should consider when developing or deploying AI tools. Additional briefs provide greater consideration of AI in law enforcement, the criminal courts system, and corrections.   

  Key Takeaways ¡ AI will transform our personal, industrial, commercial, and civil realities in the years to come— enabling and challenging individuals involved in the justice system as well as in criminal activity. ¡ AI tools have the potential to improve efficiency, reduce costs, and expand capabilities across many criminal justice use cases; however, technical feasibility and operational realities need to be considered. ¡ AI systems carry inherent risk that decision makers need to understand. For example, AI technologies raise ethical and civil liberties questions that the criminal justice system and society at large will have to wrestle with in the years ahead. AI will bring changes to nearly every industry over the next decade. In fact, AI is already impacting our daily lives and is being built into the background of many of our daily activities—from facial recognition technologies that unlock our smartphones, to algorithms that recommend movies we might like, to virtual chatbots that handle our customer service inquiries. Forthe criminal justice system, AI presents opportunities along with significant risks. AI tools have the potential to improve efficiency, reduce costs, and expand capabilities across many criminal justice use cases. Yet many criminal justice leaders have misconceptions about the capabilities and the level of investment required to create or deploy AI solutions for specific use cases

Research Triangle Park, NC:RTI International.,   . 

2020. 10p.

Change to Federal Definition of Hemp and Implications for Federal Enforcement

By Lisa N. Sacco, Zachary T. Neuhofer, Hassan Z. Sheikh

Change to Federal Definition of Hemp and Implications for Federal Enforcement

December 3, 2025 (IN12620)

On November 12, 2025, Congress and President Trump enacted a full-year FY2026 Agriculture appropriations act (P.L. 119-37, Division B), which contained a provision that reimposes federal controls over certain hemp products.

Both marijuana and hemp are varieties of the cannabis plant, and until 2018, hemp was considered to be marijuana as defined under the Controlled Substances Act (CSA). From 1970 until 2018, the federal government's definition of marijuana included hemp and its derivatives, and widespread hemp production was generally prohibited. Under the Agriculture Improvement Act of 2018 (2018 farm bill; P.L. 115-334), Congress amended the CSA definition of marijuana to reflect the differences in the chemical and psychoactive properties between hemp and marijuana, but it referred only to the level of delta-9 tetrahydrocannabinol (THC) to distinguish between them and not the other cannabinoids found within the cannabis plant. Some interpreted this definition of marijuana and the new federal definition of hemp to mean that products containing less than 0.3% delta-9 THC in addition to other psychoactive compounds would not be considered marijuana and would legally be considered hemp—the so-called farm bill loophole

Washington, DC: Congressional Research Service, 2025. 3p.

The Hidden Web of Criminal Legal System Fines and Fees in Kentucky

Ashley Spalding, Pam Thomas, Patience Martin, Scott West and Kaylee Raymer | July 8, 2025

Thousands of provisions in Kentucky state law, and untold local ordinances, make up a vast, hidden web of criminal legal system fines and fees that trap many people in a cycle of long-term debt and incarceration. In a poor state like Kentucky, owing a few hundred dollars in fines and fees for a minor offense can all too easily ensnare a person indefinitely in the criminal system and result in lost income and employment, homelessness, poor health, and family instability, among other consequences. As of 2019, Kentuckians owed at least $91 million in fines and fees debt.

2025. 27p.

Police Use Of Deadly Force In New York State: A Report To Governor Mario M. Cuomo

Richard J. Condon Commissioner Division Of Criminal Justice Services

Police Use of Deadly Force in New York State: A Report to Governor Mario M. Cuomo (1985) offers one of the earliest systematic examinations of how and why lethal force was deployed by law enforcement across the state during a period of intense public scrutiny. Commissioned at a time when debates over police accountability, training standards, and civil rights were gaining national prominence, the report evaluates legal frameworks, departmental policies, and patterns of police–citizen encounters to assess the necessity and proportionality of deadly force incidents. Drawing on case reviews, agency surveys, and statistical analyses, it seeks to identify structural weaknesses and propose reforms aimed at reducing unnecessary violence and strengthening public trust.

Viewed from today’s perspective, the report stands as an important precursor to contemporary discussions about policing and the appropriate limits of state power. In the decades since its publication, nationwide movements such as Black Lives Matter, advances in data transparency, increased availability of video evidence, and evolving constitutional standards have intensified scrutiny of deadly force practices. Modern debates continue to revolve around issues the 1985 report identified early on: the need for clear and consistent use‑of‑force policies, robust training in de‑escalation, improved data collection, and stronger mechanisms of accountability. As current policymakers and communities grapple with how to balance public safety, civil liberties, and equitable treatment, this historical report offers valuable insight into the longstanding nature of these challenges and the enduring need for thoughtful, evidence‑based reform.

If you'd like, I can also turn this into a full foreword, integrate it into a larger document, or tailor the tone for academic, policy, or public audiences.

NY. Division Of Criminal Justice Services. 1985. p.273.

The Law Of Nations Applied To The Conduct And Affairs Of Nations And Sovereigns.

By M. D. Vattel. Introduction by Graeme R. Newman

A foundational work of international law, still resonant today.

First published in the eighteenth century and issued in authoritative English editions throughout the nineteenth, The Law of Nations by Emer de Vattel shaped how statesmen, jurists, and diplomats understood the rights and duties of sovereign powers. In this monumental treatise, Vattel applies the principles of natural law to the real conduct of nations, addressing war and peace, treaties and alliances, commerce and neutrality, diplomacy, and the limits of lawful power.

Rejecting both utopian idealism and brute realpolitik, Vattel argues that true national interest is inseparable from justice, restraint, and respect for sovereignty. Nations, like individuals, are bound by moral obligations arising from their coexistence in a shared international society. His careful analysis of war, intervention, and treaty obligations established enduring standards that influenced constitutional debates, foreign policy doctrine, and the development of modern international law.

This edition preserves a work that continues to illuminate contemporary conflicts and global challenges. Clear-eyed, systematic, and profoundly influential, The Law of Nations remains essential reading for anyone seeking to understand how lawful order, moral principle, and power intersect in the affairs of nations.

The theses advanced in The Law of Nations remain strikingly relevant to contemporary international disputes, particularly those involving intervention, recognition of governments, and claims of humanitarian necessity. Vattel’s insistence on sovereignty as the cornerstone of international order places clear limits on the legitimacy of external interference in the internal affairs of states. While he allows that extreme cases—such as manifest tyranny threatening the very existence of a people—may raise difficult moral questions, he consistently warns that powerful states are prone to disguise ambition and interest under the language of justice.

This caution is especially pertinent when considering recent controversies surrounding efforts by the United States to promote regime change in Venezuela, including diplomatic, economic, and political measures aimed at displacing the government of Nicolás Maduro. From a Vattelian perspective, such actions raise fundamental questions about lawful authority, the limits of collective judgment, and the distinction between moral condemnation and legal right. Vattel argues that no nation may unilaterally assume the role of judge over another sovereign without undermining the mutual independence on which international society depends. To do so, he suggests, risks converting international law into a mere instrument of power.

At the same time, Vattel’s framework does not deny the reality of gross misrule or humanitarian suffering. Rather, it demands rigorous scrutiny of motives and means. Economic coercion, diplomatic isolation, and recognition of alternative authorities would, in his analysis, need to be justified not by ideological preference or strategic advantage, but by clear evidence that such measures genuinely serve the common good of nations and do not erode the general security of the international system. His emphasis on proportionality, necessity, and respect for established sovereignty stands in tension with modern practices of intervention that rely on contested doctrines of legitimacy.

Viewed through this lens, contemporary debates over Venezuela illustrate the enduring force of Vattel’s central warning: that the stability of international relations depends less on the moral claims of individual powers than on shared restraint. His work reminds modern readers that the erosion of sovereignty in one case—however rhetorically justified—sets precedents that may ultimately weaken the legal protections upon which all nations, strong and weak alike, rely.

P.H. Nicklitn etc. Philadelphia. 1829. Read-Me.Org Inc. New York-Philadelphia-Australia. 2026 p.424.

Applying Procedural Justice to Sexual Harassment Policies, Processes, and Practice: Issue Paper

By Umphress, E., and Thomas, J. M. (Eds.)

The 2018 National Academies report Sexual Harassment of Women: Climate, Culture, and Consequences in Academic Sciences, Engineering, and Medicine recommends the creation of institutional policies that can improve an institution's climate, culture, and reporting options while supporting those who have experienced sexual harassment.

This perspective paper addresses the 2018 report recommendations by exploring how a procedural justice framework could help guide improvements and revisions to policies, processes, and practices within higher education institutions with the potential to mitigate the negative experiences and outcomes of those affected by sexual harassment. Based on previous research, this paper applies a principles-based perspective to highlight ideals, rules, and standards that institutions can implement to achieve this goal.

Washington, DC: The National Academies Press. https://doi.org/10.17226/26563. 2022. 33p.

Identifying Gaps in Sexual Harassment Remediation Efforts in Higher Education:

By TERESA FRASCA et al.

Sexual harassment continues to be a persistent problem in institutions of higher education, despite the creation of new resources, policies, and programs aimed at combatting high rates on campuses (NASEM, 2018). Historically, these institutions have focused sexual harassment 1 prevention and response efforts on complying with the requirements of the law (NASEM, 2018). Specifically, institutions in the United States have focused on responding to formal reports of sexual harassment through complying with Title IX and Title VII2 —which prohibit discrimination against employees, students, staff, and/or faculty on the basis of sex—rather than identifying what harm has been caused by the sexual harassment, who has been harmed, and how that harm can be repaired. Even when institutions provide resources to repair the harm caused by sexual harassment, the harm might extend beyond the conclusions of the institutional response process and provision of the required remedial measures and sanctions (when applicable) (e.g., Grossi, 2017; Karp and Frank, 2016; McMahon et al., 2019; NASEM, 2018; Smith and Freyd, 2014). Put simply, there is a lack of attention to remediating (or repairing and limiting) the damage caused by sexual harassment across the timeline of the institutional response process (see Box 1 and Figure 1).

National Academies of Sciences. 2025. 76p.

Blackstone Commentaries on Criminal Law

The Blackstone Commentaries on Criminal Law are part of Sir William Blackstone's influential 18th-century work, Commentaries on the Laws of England. This comprehensive treatise, published between 1765 and 1769, is divided into four volumes. The fourth volume, "Of Public Wrongs," focuses on criminal law. The other volumes are "Of the Rights of Persons," "Of the Rights of Things," and "Of Private Wrongs. "”

In "Of Public Wrongs," Blackstone provides a detailed examination of the criminal laws of England, aiming to demonstrate their justice and mercy. Despite the severe penalties of the time, later known as the "Bloody Code," Blackstone's work sought to rationalize and justify the legal system's approach to crime and punishment.

The Commentaries were groundbreaking for their readability and accessibility, making complex legal principles understandable to a broader audience. They played a significant role in the development of both British and American legal systems and continue to be referenced in legal education and court decision

Funding Limits on Federal Prosecutions of State-Legal Medical Marijuana

By Joanna R. Lampe

Federal law generally prohibits the production, distribution, and possession of marijuana for both medical
and recreational purposes. In April 2024, news outlets reported that the Drug Enforcement Administration
(DEA) planned to change the status of marijuana under the Controlled Substances Act (CSA) by moving
it from Schedule I to the less restrictive Schedule III. Such a move would relax some controls over
marijuana but would not immediately legalize medical or recreational use of marijuana under the CSA.
Notwithstanding the strict federal control of marijuana, in recent years, many states have repealed state
law criminal prohibitions 
on some marijuana-related activities, and medical and recreational cannabis
businesses now operate openly in some parts of the United States.
In response to the disparity between state and federal law, Congress has enacted appropriations legislation
prohibiting the Department of Justice (DOJ) from expending appropriated funds to prevent states from
implementing their own medical marijuana laws. Federal courts have interpreted the appropriations rider
to prohibit DOJ from bringing criminal drug prosecutions against certain persons and entities involved in
the state-legal medical marijuana industry, but they have differed as to the scope of conduct the rider
shields from prosecution.
This Legal Sidebar first outlines the legal status of marijuana under federal and state law. It then discusses
the medical marijuana appropriations rider and analyzes how federal courts have interpreted the
provision. The Sidebar closes with key considerations for Congress related to the appropriations rider and
the disparity between federal and state marijuana policy more generally.
Federal and State Marijuana Regulation
The plant Cannabis sativa L. and products derived from that plant have a number of uses and may be
subject to several overlapping legal regimes. In recent years, a significant divide has developed between
federal and state marijuana laws. On the federal side, the CSA imposes stringent regulations on the
cannabis plant and many of its derivatives. Activities involving controlled substances not authorized
under the CSA are federal crimes that may give rise to large fines and significant prison sentences.
Unless an exception applies, the CSA classifies cannabis and its derivatives as marijuana. Congress
classified marijuana as a Schedule I controlled substance when it enacted the CSA, reflecting a legislative

Washington, DC: Congressional Research Service, 2024. 5p.

The Impact of Covid-19 on the Future of Law

Edited by Murdoch Watney

The chapters in this volume focus on the future of law and related disciplines: human rights and access to medical care, corruption and money laundering in state procurement, counterfeit medical products, IPR waiver on COVID-19 vaccines, emergency powers, freedom of expression, prison healthcare, the impact on labour law, access to courts and digital court processes, access to education and the impact on insurance law are but a few possible topics which are addressed.

Johannesburg, UJ Press, 2022. 288p.

Privatization of Services in the Criminal Justice System

By American Bar Association Working Group on Building Public Trust in the American Justice System

Released in June 2020, this Report provides a comprehensive overview of the role private companies play throughout the criminal justice system and how the use of these private companies impacts low-income individuals moving through the system. The Report summarizes research done by other entities, academics, journalists, and activists on specific aspects of privatization. The organization of the report tracks the sequence of a typical accused individual's experiences in the criminal justice system following arrest, demonstrating how costs compound as the individual moves through the system.

The Report acknowledges that courts and other government entities sometimes need to import expertise they lack, but it urges governments to recognize how low-income individuals too often can be relentlessly ensnared in the criminal justice system, not because they engage in ongoing criminal activity, but because they cannot pay the debts imposed by the system itself. Too often, by hiring private companies to handle what were previously governmental functions in the criminal justice system, government agencies exacerbate the cycle of mandatory fees, nonpayment, and consequent additional fees. Far too frequently, government authorities allow private companies to operate in the criminal justice system with little or no oversight and to charge fees untethered to actual costs.

The Report urges the ABA to adopt specific policy on the privatization of services in the criminal justice system, as well as to promote the policies, already in existence, calling for careful limitations on fines and fees.

Chicago: ABA, 2020. 36p.

Overturning Convictions -- and an Era. Convictions Integrity Unit Report, January 2018-June 2021

By The Philadelphia District Attorney's Office, Data Lab

The Conviction Integrity Unit (“CIU”) was established in 2018 by District Attorney Larry Krasner. The CIU’s predecessor, the Conviction Review Unit (“CRU”), which was established in 2014, had operated for a number of years with only a small staff and a narrow mandate. The CRU only reviewed claims of actual innocence, and rarely undertook investigations into whether new evidence existed that could prove those claims. Cases where the defendant had confessed were largely excluded from consideration, as if false confessions (which occur in a quarter of DNA exonerations nationally) were always reliable. Today, the CIU is an independent unit within the Philadelphia District Attorney’s Office, reporting directly to the District Attorney, and involved in one out of every ten homicide exonerations in the country. When District Attorney Krasner transformed the unit from the CRU to the CIU, he immediately tasked it with a broader mandate: not only to review past convictions for credible claims of actual innocence but also to review claims of wrongful conviction and secondarily to consider sentencing inequities. Early in his first term, District Attorney Krasner merged the CIU with the Office’s Special Investigations Unit (“SIU”). The two units share a common focus on investigating official misconduct, and their cases frequently overlap. However, as the CIU and SIU personnel have grown and expanded their caseloads, the units were separated in the summer of 2020 to better accommodate each unit’s mission

The CIU’s mission is to ensure that justice is served by prosecutors at the Philadelphia District Attorney’s Office and to remedy the Office’s wrongful convictions. Pennsylvania prosecutors have limited post-con viction discretion in general and they have no legal authority to set aside convictions in the interest of justice. Since CIU prosecutors cannot unilaterally dismiss an existing conviction or free anyone we believe to be wrongfully incarcerated, the CIU makes a recommendation to the court that the petitioner be granted a new trial whenever its independent investigation leads it to conclude that a conviction lacks integrity. If warranted, the CIU will move to withdraw the charges against the petitioner or reduce the charges so that an equitable sentence can be imposed. In cases that are ultimately withdrawn or dismissed, the CIU will investigate and prosecute the actual perpetrator where feasible. However, given the inherent difficulties involved in investigating decades-old crimes where the original investigation was either botched or inadequate, identifying the real perpetrator and bringing that person to justice may be impossible. To date, the Philadelphia Police Department has declined to re-open and re-investigate old cases following exonerations. For example, Walter Ogrod was exonerated of a 1988 murder in 2020. While investigating the case, the CIU identified two alternate suspects. As of almost a year after Ogrod’s exoneration, however, police had not even begun the process of re-opening the underlying murder case. Additionally, the CIU believes that conviction integrity is more than simply fixing past mistakes and exposing misconduct. It also requires policies and processes to prevent future injustices. With this aim, the CIU helps craft office-wide policies and trainings designed to reduce the number of future wrongful convictions.

This report encompasses exonerations, commutations, and sentencing adjustments from January 1, 2018 through June 15, 2021. This report includes data on cases submitted to the CIU, active investigations, cases declined or closed, and cases awaiting review that are accurate as of May 31, 2021. Experts who have opined on the issue of best practices for conviction integrity units agree that in order to increase public understanding of and trust in such units, offices should publish annual reports detailing the results of their conviction and case reviews and actions taken. This report is the first report issued by the CIU under District Attorney Krasner and is a first-term report, rather than an annual report. Although annual reports were contemplated, they were postponed as a result of multiple factors ,including lack of resources, internal technology deficits, case load, and the COVID-19 pandemic.

Philadelphia District Attorney's Office, Data Lab. 2021. 47p.

Prosecutors and Responses to Crimes of Violence : Notes from the Field

By The Center for Justice Innovation

Within the context of a national movement toward criminal legal system reform— including the use of alternatives-to incarceration (ATIs) for non-violent and drug cases—legal responses to crimes of violence still largely involve incarceration. Few jurisdictions apply alternatives to address violent crime, instead continuing to rely on carceral approaches, despite evidence pointing to the overall negative effects. The current study explores alternative responses to crimes of violence outside of incarceration. Specifically, this document presents 

  Specifically, this document presents findings from five in-depth case studies. In it, we highlight some of the unique approaches to responding to violent crime implemented in each site, in hopes that they may prove instructive for other jurisdictions seeking to explore or further develop alternative approaches to crimes of violence. The featured approaches are implemented at various stages of the criminal legal system process—from after charging and the initial appearance, to pretrial and plea, to post-plea, pre- sentencing, to post-conviction and sentencing. We explore a pretrial  supervision program, restorative justice programs, pretrial diversion programs, specialty courts, and post-conviction resentencing initiatives. Each study also includes specific recommendations made by those in the featured site and based on the information learned from the featured site. The companion piece, A New Approach: Alternative Prosecutorial Responses to Violent Crime, presents a comprehensive summary of study findings, along with resultant recommendations for policy and practice. 

New York: Center for Justice Innovation. 2024, 41pg