Karolina Dam, founder of the NGO Sons and Daughters of the World, joins the podcast this week to tell the story of her son, Lukas. Lukas is a Danish citizen who became radicalized in Copenhagen, fled to Syria, and joined ISIS. We discuss how Facebook groups are used to recruit potential terrorists, the role that social media can play in deradicalization, and the types of communication that take place between a foreign fighter and his mother.