By Michael T. Light , Julia T. Thomas

Unauthorized immigration, already a divisive and controversial subject in American society, was reframed as a grave national security threat after the terrorist attacks on Sept. 11, 2001. Yet, despite substantial public, political and policy attention to the issue of undocumented immigration and terrorism, there has been relatively little empirical assessment of the relationship between unauthorized immigration flows and terrorist activity. We attempt to fill this gap by combining newly developed estimates of the unauthorized population, a novel use of sentencing and prosecutorial data to measure terrorism-related activity, and multiple data sources on the criminological, socioeconomic, and demographic context from all 50 states from 1990 to 2014. We then leverage this unique dataset to examine the longitudinal, macro-level relationship between undocumented immigration and various measures of terrorism. Results from fixed effects negative binomial models suggest that increased undocumented immigration over this period is not associated with terrorist attacks, radicalization, or terrorism prosecutions.

Soc Sci Res. 2021 February ; 94: 102512. doi:10.1016/j.ssresearch.2020.102512. 

By Michael T. Light and Isabel Anadon

The dramatic increase in both lawful and unauthorized immigration in recent decades produced a groundswell of research on two questions: (1) Does immigration increase violent crime? and (2) What policy responses are most effective at addressing unauthorized immigration (e.g., sanctuary policies, deportations, etc.)? For the most part, these bodies of work have developed independently, and thus we know little as to whether the insights from one inform the other. This Article fills this gap by first reviewing both areas of research and then triangulating shared findings between them. In doing so, we focus on three contemporary immigration policies: (1) increased deportation; (2) “sanctuary” policies, and (3) “amnesty” laws. Our review provides little evidence to suggest that immigration increases the prevalence of violence. For this reason, policies aimed to enhance public safety by reducing immigration are unlikely to deliver on their crime reduction promises.

103 Marq. L. Rev. 939 (2020).

By Graham C. Ousey and Charis E. Kubrin

Are immigration and crime related? This review addresses this question in order to build a deeper understanding of the immigration-crime relationship. We synthesize the recent generation (1994 to 2014) of immigration-crime research focused on macrosocial (i.e., geospatial) units using a two-pronged approach that combines the qualitative method of narrative review with the quantitative strategy of systematic meta-analysis. After briefly reviewing contradictory theoretical arguments that scholars have invoked in efforts to explain the immigration-crime relationship, we present findings from our analysis, which (a) determined the average effect of immigration on crime rates across the body of literature and (b) assessed how variations in key aspects of research design have impacted results obtained in prior studies. Findings indicate that, overall, the immigration-crime association is negative—but very weak. At the same time, there is significant variation in findings across studies. Study design features, including measurement of the dependent variable, units of analysis, temporal design, and locational context, impact the immigration-crime association in varied ways. We conclude the review with a discussion of promising new directions and remaining challenges in research on the immigration-crime nexus.

Annu. Rev. Criminol. 2018. 1:63–84

By Jon Heidt

This report reviews the key research literature on the impact of decriminalization, depenalization, diversion, and harm reduction programs from countries in Europe, North America, South America Oceania, and several U.S. states including California, Maine, Oregon, and Washington state. From this review, key indicators emerged in two domains: crime and criminal justice and mental and public health. Crime and criminal justice indicators include crime rates, levels of organized crime, rates of imprisonment, levels of public disorder (e.g., open air drug use and dealing), drug use trends and patterns, drug availability and price, rates of treatment uptake, addiction and overdose, police clearance rates, costs of enforcement, and functioning. Mental and public health indicators include drug use rates and patterns, rates of drug treatment participation, and rates of drug related mortality. These indicators were used to evaluate the impact that different approaches to drug policy have on society.

Vancouver, BC:  International Centre for Criminal Law Reform, 2021. 80p.

By  Almudena Arcelus, Carlos Chiapa, Pierre Cremieux, Maria Garibotti, Owen Hearey, Yeseul Hyun, Lu Jinks, Jee-Yeon Lehmann, Yao Lu, Kritika Narula, Lolo Palacios, Haimin Zhang 

Immigrants are an integral part of the U.S. economy. According to 2022 data from the U.S. Census Bureau, there are approximately 46 million immigrants in the United States, representing close to 14 percent of the total U.S. population. Immigrants participate in the civilian labor force at higher rates than native-born U.S. workers, and they are an important source for U.S. labor force growth that will help offset the large-scale retirement of baby boomers. A significant part of the growth in the foreign-born labor force in the United States over the past decade is associated with the arrival of immigrants who hold a bachelor’s degree or higher. Immigrants in the United States participate in a wide variety of occupations, ranging from high-skilled, high-wage jobs such as physicians and engineers to low-wage jobs such as agriculture work and food manufacturing. During the COVID-19 pandemic and associated lockdowns in the United States, immigrants played critical roles in key sectors of the economy, including healthcare, scientific research and development, agriculture, and food supply. Analysis by the Immigration Research Initiative, a nonpartisan think tank, estimates that in 2021, immigrants contributed $3.3 trillion to the U.S. gross domestic product (GDP), which represents 17 percent of total U.S. GDP. In addition to the civilian workforce, immigrants also serve in the U.S. military. As of 2022, nearly 731,000 veterans of the U.S. armed forces were born outside the United States, representing approximately 4.5 percent of the U.S. veteran population, with Mexican and Filipino immigrants comprising the largest groups of foreign-born veterans. 

Boston: The Analysis Group, 2024. 166p.

By Ariel G. Ruiz Soto

Immigrants in the United States commit crimes at lower rates than the U.S.-born population, notwithstanding the assertion by critics that immigration is linked to higher rates of criminal activity. This reality of reduced criminality, which holds across immigrant groups including unauthorized immigrants, has been demonstrated through research as well as findings for the one state in the United States—Texas—that tracks criminal arrests and convictions by immigration status. A growing volume of research demonstrates that not only do immigrants commit fewer crimes, but they also do not raise crime rates in the U.S. communities where they settle. In fact, some studies indicate that immigration can lower criminal activity, especially violent crime, in places with inclusive policies and social environments where immigrant populations are well established. 

Washington, DC: Migration Policy Institute, 2024. 7p.

By Armita Adily, George Karystianis and Tony Butler

Police attend numerous family and domestic violence (FDV) related events each year and record details of these events as both structured data and unstructured free-text narratives. These descriptive narratives include information about the types of abuse (eg physical, emotional, financial) and the injuries sustained by victims. However, this information is not used in research. In this paper we demonstrate the application of an automated text mining method to identify abuse types and victim injuries in a large corpus of NSW Police Force FDV event narratives (492,393) recorded between January 2005 and December 2016. Specific types of abuse and victim injuries were identified in 71.3 percent and 35.9 percent of FDV event narratives respectively. The most commonly identified abuse types mentioned in the narratives were non-physical (55.4%). Our study supports the application of text mining for use in FDV research and monitoring.

Trends & issues in crime and criminal justice no. 630. Canberra: Australian Institute of Criminology. 2021. 12p.

By Armita Adily, George Karystianis and Tony Butler

In this paper, we describe the feasibility of using a text-mining method to generate new insights relating to family and domestic violence (FDV) from free-text police event narratives. Despite the rich descriptive content of the event narratives regarding the context and individuals involved in FDV events, the police narratives are untapped as a source of data to generate research evidence. We used text mining to automatically identify mentions of mental disorders for both persons of interest (POIs) and victims of FDV in 492,393 police event narratives created between January 2005 and December 2016. Mentions of mental disorders for both POIs and victims were identified in nearly 15.8 percent (77,995) of all FDV events. Of all events with mentions of mental disorder, 76.9 percent (60,032) and 16.4 percent (12,852) were related to either POIs or victims, respectively. The next step will be to use actual diagnoses from NSW Health records to determine concordance between the two data sources. We will also use text mining to extract information about the context of FDV events among key at-risk groups.

Trends & issues in crime and criminal justice no. 629. Canberra: Australian Institute of Criminology. 2021. 16p.

By Benoit Leclerc, Jacqueline Drew, Thomas J Holt, Jesse Cale and Sara Singh

The development of online technologies in recent decades has facilitated the distribution and consumption of child sexual abuse material (CSAM) over the internet, which also led to the emergence of CSAM on the darknet—the segment of the internet hidden from the general public. Using data obtained from interviews with online investigators, this study uses crime script analysis to reconstruct step-by-step how offenders operate on the darknet. The findings highlight the three phases of the script: (1) the crime set-up phase, (2) the crime completion phase, and (3) the crime continuation phase. Scripting is a practical method of developing concrete ways to address this problem. The implications of using crime scripts to fight CSAM are discussed.

Trends & issues in crime and criminal justice no. 627. Canberra: Australian Institute of Criminology. 2021. 14p.

By Hayley Boxall and Siobhan Lawler

A key assumption in the domestic violence literature is that abuse escalates in severity and frequency over time. However, very little is known about how violence and abuse unfolds within intimate relationships and there is no consensus on how escalation should be defined or how prevalent it is. A narrative review of the literature identified two primary definitions of escalation: a pattern of increasingly frequent and/or severe violent incidents, or the occurrence of specific violent acts (ie outcomes). Escalation appears to be limited to serious or prolific offenders rather than characterising all abusive relationships. However, disparities in prevalence estimates between those provided by victim–survivors and recorded incident data highlight the difficulty of measuring this aspect of abusive relationships.

Trends & issues in crime and criminal justice no. 626. Canberra: Australian Institute of Criminology 2021.  17p.

By Isabella Voce, Anthony Morgan and Christopher Dowling

This study examines the criminal histories of outlaw motorcycle gang (OMCG) members during adolescence and early adulthood to determine whether the profile of young members has changed over time. The recorded offence histories of three cohorts of members—those born between 1979 and 1983, 1984 and 1988, and 1989 and 1993—were compared. Seventy-eight percent of OMCG members across all three cohorts had at least one recorded offence between the ages of 12 and 24. The majority of offenders did not desist but continued offending at a steady rate into adulthood. The youngest cohort in the study was more likely than the middle and older cohorts to have a criminal history and follow a high-rate offending trajectory. Members of the youngest cohort were also more likely to have been apprehended for violence and intimidation, weapons and ongoing criminal enterprise offences by their early twenties. These results suggest that OMCGs are recruiting younger members, who are becoming involved in gang-related offending earlier in life, or that individuals with a history of offending are becoming more likely to join or be recruited into OMCGs.

 Trends & issues in crime and criminal justice no. 625. Canberra: Australian Institute of Criminology 2021.  18p.

By Christopher Dowling, Hayley Boxall and Anthony Morgan

This study examines the officially recorded criminal careers of 2,076 domestic violence offenders and 9,925 non-domestic violence offenders in New South Wales in the 10 years following their first police proceeding. Group-based trajectory modelling was used to examine both domestic violence and non-domestic violence offending. Special attention is given to the degree of versatility in offending, and to the interplay of domestic violence and non-domestic violence offending trajectories. Domestic violence offending often formed part of a broader pattern of offending. While trajectories of low‑frequency domestic violence and non-domestic violence offending were most common, domestic violence typically increases as non-domestic violence offences begin to decline. Importantly, there was variability in the offending profiles of domestic violence offenders. This was amplified when non-domestic violence offending was analysed, indicative of a complex array of underlying risk factors.

Trends & issues in crime and criminal justice no. 624. Canberra: Australian Institute of Criminology. 2021. 17p.

By Hayley Boxall and Anthony Morgan

In this study, we analysed data from a survey of Australian women (n=9,284) to identify women at the highest risk of physical and sexual violence and coercive control during the early stages of the COVID-19 pandemic. Logistic regression modelling identified that specific groups of women were more likely than the general population to have experienced physical and sexual violence in the past three months. These were Aboriginal and Torres Strait Islander women, women aged 18–24, women with a restrictive health condition, pregnant women and women in financial stress. Similar results were identified for coercive control, and the co-occurrence of both physical/sexual violence and coercive control. These results show that domestic violence during the early stages of the COVID-19 pandemic was not evenly distributed across the Australian community, but more likely to occur among particular groups.

Trends & issues in crime and criminal justice no. 618. Canberra: Australian Institute of Criminology. 2021. 19p.

By John Scott, Zoe Staines and James Morton

While there has been much research into Indigenous crime and justice, previous research draws largely on Aboriginal peoples, who are culturally distinct from Torres Strait Islanders. The Torres Strait region offers a unique opportunity to observe how justice is practised in remote contexts. Through statistical analysis and qualitative fieldwork, this study documents crime rates, community and customary justice practices and impediments to justice, to identify best practices unique to the Torres Strait region. Crime-report data indicate relatively low rates of crime in the Torres Strait region. While under-reporting and under-policing can partly explain these differences, strong levels of social capital, as well as unique justice practices, also play important roles in preventing crime in the region.

Trends & issues in crime and criminal justice no. 620. Canberra: Australian Institute of Criminology. 2021. 13p.

By: Jason Manning

This article focuses on intimate partner killings to address the question of why some killers subsequently commit suicide whereas others do not. Utilizing Blackian theories of conflict management and Manning’s theory of suicide, it advances hypotheses about when intimate partner conflict will result in homicide-suicide rather than homicide alone. These hypotheses propose that differing amounts of status superiority and relational distance predict and explain different patterns of lethal violence. The hypotheses are illustrated and supported with data taken from a study of intimate partner homicides in the state of West Virginia. The article concludes by arguing for a micro-structural model that addresses suicide, homicide, and homicide-suicide.

Homicide Studies 1 –20

By: Ethan Trinh

This autohistoria, or “a personal essay that theorizes,” is a special piece to me. It is spiritual, poetic, political, and dialogic. This essay thus delves deeper into the mourning, the fear, the tears, the pain, the loneliness, the strength of a Vietnamese queer immigrant in a state of Nepantla in order to relate with other queers of color in the dark (i.e., in suicidal process). “Living in Nepantla, the overlapping space between different perceptions and belief systems, you are aware of the changeability of racial, gender, sexual, and other categories rendering the conventional label-ling obsolete.” In this space, I attempt to use the concept of Nepantla to describe and understand stages of pre- and post-suicide attempt that I experienced. Then, I will conclude with a call for policy change to ask for attention to those who live in the life-death margins and in between and among worlds as mine.

LGBTQ Policy Journal

By: D J Williams, Michael Arntfield, Kaleigh Schaal, Jolene Vincent

Over the past several years, an online community of self‐described “incels,” referring to involuntary celibates, has emerged and gained increased public attention. Central to the guiding incel ideology and master narrative are violent misogynistic beliefs and an attitude of entitlement, based on male gender and social positioning, with respect to obtaining desired and often illusory sexual experiences. While violence and hate speech within the incel community are both common, there exists a notable subset of incels who have been willing to act on those violent beliefs through the commission of acts of multiple murder. This study explores the demographic, cognitive, and other characteristics of seven self‐identified incels who have attempted and/or successfully completed homicide. The findings suggest that although self‐perceptions tend to reflect either grandiosity or self‐deprecation, homicidal incels share similar demographic characteristics and dense common clusters of neutralization techniques, cognitive distortions, and criminal thinking errors.

Behav Sci Law. 2021;1–16.

By: Ecaterina Balica

Objective. The present paper analyses the relation between the number of blows, location of wounds and the length between homicide and suicide in homicide-suicide (HS) cases committed in Romania in the timeframe 2002-2013. At the same time, the study presents the correlation between three types of HS (intimate partner homicide-suicide (IPH-S), filicide- suicides (FS), familicides-suicides (Fam-S) and the above mentioned variables.

Method. The data regarding the number of blows, location of wounds and length between homicide and suicide were extracted from the Homicide-suicides in Romania 2002-2013 database (N=132). The database includes information regarding all HS committed in Romania and the data were collected from the recordings of the Criminal Investigations Services, from criminal files in prosecutors’ custody and from articles published in online newspapers. The data analysis was done by using SPSS 22.0.

Results. More than a half of the suicides occurred immediately after the aggressor committed the homicide (N=71; 53.8%). In approximately two thirds of the cases (N=56; 57.1%), the death of the victim resulted from a great number of blows. Many aggressors preferred to hit their victims in the head area (21.5%) or neck area (22.3%) only. The most common suicide method recorded in HS cases was by hanging (34.8%).

Conclusions. The prevention of the HS seems to be a difficult task after the aggressor initiated the first act of aggression (the homicide). Therefore, prevention and intervention have to be focused on the initial phases of the acts of violence that precede HS.

Rom J Leg Med [26] 308-313 [2018]

By: David B. Johnson and Joshua J. Robinson

We explore the relationship between gun prevalence and homicides in the United States from 2003–2019. Unlike previous research, which typically uses an indirect, state-level measure of gun prevalence, we use a direct measure of guns in a narrow geographic area: gun dealers. We find an increase in gun dealer density is significantly and positively associated with increased homicides in subsequent years. We compare estimates from our preferred measure, the number of dealers per 100 square miles in a local area, to those found using other gun prevalence measures and find our preferred measure to be more consistent in magnitude across three different estimation methods and two different data sources. We additionally show the effect of gun dealer density is limited mostly to counties that have a high percent of Black residents. We propose that the so-called “Ferguson Effect”—a sharp increase in violent crime in urban and Black communities after 2014—might be partially explained by an influx of gun dealers in Black communities, rather than just a change in the propensity of Black residents to call the police or changes in police behavior.

October 1, 2021

By: Paolo Roma, Antonella Spacca, Maurizio Pompili , David Lester, Roberto Tatarelli, Paolo Girardi, Stefano Ferracuti

Homicide–suicide is an event in which the murderer commits suicide after the homicide. There are at least 14 epidemiological studies on the topic, and all have found that homicide–suicide is more common among family members. The murderers are most often males and the victims females. There is no recent research on this phenomenon in Italy. The purpose of the study was to evaluate the incidence of homicide–suicide in Italy over a period of 24 yrs and to compare Italian data with published international data. We used information gathered by press agencies and from the four major Italian newspapers. Between 1985 and 2008, 662 cases of homicide–suicide were identified, with 1776 deaths. The murderer was male in 84.6% of the cases, typically using a firearm. The most common motivation was romantic jealousy, followed by socio-economic stress. The rate of homicide–suicide was 0.04%. Comparison with international studies is not always possible due to the lack of information for certain categories. The common factors identified may be helpful for prevention.

Volume 214, Issues 1–3, 10 January 2012, Pages e1-e5