Radicalization is a global event affecting different countries and is present in different historical contexts. A social and psychological account could only reduce the impact of terrorism considering a historical fact. Nevertheless, there are elements of radicalization in the dark history of humanity that still today bear consequences on casualties and their progenies. The victims of political extremism, the modern persecution of children in conflict areas, and the mass murders in a zone of interethnic conflicts are examples of how radicalization and terrorism continue to decimate victims worldwide. The knowledge of historical and political aspects interpreted with a psychological lecture can probably highly the seeds of radicalization and hopefully reduce or stop its diffusion.