Radicalization may be understood as a process leading towards the increased use of political violence, while de-radicalization, by contrast, implies reduction in the use of political violence. Taken together, the study of radicalization and re-radicalization is central to answering the question oh how political violence emerges, how it can be prevented, and how it can be contained.
Della Porta, Donatella and Gary LaFree. 2012. Processes of radicalization and de-radicalization. Editor’s introduction, International Journal of Conflict and Violence 6:4-10. https://www.start.umd.edu/sites/default/files/publications/local_attachments/LafreeEditorial.pdf