Conflicts arise and, no matter what they are about, turn violent if there are no institutions within which they can be conducted by other means. Such unregulated conflicts intensify the process of establishing unambiguous collective identities, which appear to safeguard personal integrity and dignity. This is a precondition of successful terrorism. What are the links between migration and violent conflict? In some cases the connection is obvious, especially when native people in a country with high immigration feel threatened. Among migrants, migration can lead to both relativization and radicalization of ethnic or communal identity. The return to specific traditions to “blood and belief, faith and family” (Huntington) is only one option among others, mostly caused by perceived fraternal relative deprivation (Runciman) of the group they belong to. The escalation toward violence and terrorism among activists is caused by the experience (or imagination) of humiliation and victimization (Montville). “Religion and violence are seen as antidotes to humiliation” (Juergensmeyer). Bloody events confirm – like unquestionable “base sentences” – an overwhelming reality of friend and foe and therefore are decisive for further escalation. Long term prevention therefore should hinder and avoid humiliating and violent events.