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Prison and Violent Political Extremism in the United States

  • Gary LaFreeEmail author
  • Bo Jiang
  • Lauren C. Porter
Original Paper

Abstract

Objectives

In the current study we consider the link between imprisonment and post-prison participation in violent political extremism. We examine three research questions: (1) whether spending time in prison increases the post-release risk of engaging in violent acts; (2) whether political extremists who were radicalized in prison are more likely to commit violent acts than political extremists radicalized elsewhere; and (3) whether individuals who were in prison and radicalized there were more likely to engage in post-prison violent extremism compared to individuals who were in prison and did not radicalize there.

Methods

We perform a two-stage analysis where we first preprocess the data using a matching technique to approximate a fully blocked experimental design. Using the matched data, we then calculate the conditional odds ratio for engaging in violent extremism and estimate average treatment effects (ATE) of our outcomes of interest.

Results

Our results show that the effects of imprisonment and prison radicalization increases post-prison violent extremism by 78–187% for the logistic regression analysis, and 24.6–48.53% for the ATE analysis. Both analyses show that when radicalization occurs in the context of prison, the criminogenic effect of imprisonment is doubled.

Conclusions

In support of longstanding arguments that prison plays a major role in the identity and behavior of individuals after their release, we find consistent evidence that the post-prison use of politically motivated violence can be estimated in part by whether perpetrators spent time in prison and whether they were radicalized there.

Keywords

Prison Political extremism Terrorism Radicalization Coarsened exact matching 

Notes

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Authors and Affiliations

  1. 1.University of MarylandCollege ParkUSA

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