The Challenge
The radicalization of individuals, leading them to commit acts of aggression and terror is a leading concern across much of the world. The internet and related digital media are perceived by many to be contributing to radicalization, since they enable people with extreme views to find and connect with like-minded people at any time or place. The fear is that these individuals get trapped in an echo chamber or filter bubble, lacking a diverse range of opinions, contributing to polarization and potentially radicalization that endangers peaceful coexistence. While empirical research challenges the prominence of such a process, it is impossible to rule out some cases in which radicalization is amplified by such a reinforcing process online.