Facebook, Twitter, YouTube team up against terrorist propoganda

Three of the internet’s biggest social media sites are banding together to curb the rise of online terrorist content.

Facebook, Twitter and YouTube said Monday they have partnered on creating a shared database of images and videos that promote terrorism. The database will store and share among partners the “hashes” — or unique digital fingerprints — of terrorist content that has been removed from the services for violating their community policies.