FRONTLINE and ProPublica investigate how an online network known as Terrorgram spread extremism and violence. The documentary traces the rise of a global community of white supremacists and the anonymous, loosely moderated platforms used to spread hate and promote terror attacks. Premieres Tuesday, March 25 on PBS and online. https://to.pbs.org/3FFJbYH | FRONTLINE | PBS

If you like FRONTLINE, don’t miss our new show created exclusively for Facebook: FRONTLINE Investigates. This Facebook web series follows one story each season -- one episode at a time. New episodes drop each Sunday. Watch (and follow) the first season here: http://bit.ly/2xP6aIG | FRONTLINE | PBS

35K views · 134 reactions | Serious times demand serious journalism. Watch FRONTLINE's investigative documentaries online, at any time. https://to.pbs.org/2PwlVh5 | FRONTLINE | PBS | Facebook

295 reactions · 394 shares | In the documentary "Putin's Road to War," FRONTLINE examines the events that shaped Russian President Vladimir Putin, the grievances that drive him and how a growing conflict with the West exploded into war in Ukraine. Premieres 3/15 on PBS: https://to.pbs.org/3IOvyDf | FRONTLINE | PBS | Facebook

A gas attack. A missile strike. An uncertain future. Syria: How we got here. http://to.pbs.org/2onnh0E | FRONTLINE | PBS