Living under the constant threat of violence has a lasting effect -- even after you escape from danger, says writer and refugee advocate Zarlasht Halaimzai. One of the millions of people worldwide who have been forcibly displaced by conflict, Halaimzai now helps others overcome the devastation of war. In this poignant, vital talk, she articulates the lingering trauma of being expendable -- and shares how belonging to a community can help bring back feelings of long-lost safety.