“The Rise and Fall of Terrorgram,” a Documentary from ProPublica and FRONTLINE, Investigates a Global Online Terror Network

by ProPublica and PBS's Frontline ProPublica is a nonprofit newsroom that investigates abuses of power. Sign up to receive our biggest stories as soon as they’re published. This story is part of a collaborative investigation from ProPublica and FRONTLINE that includes an upcoming documentary, “The Rise and Fall of Terrorgram,” which premieres March 25 at 10 p.m...