Twitter axed 1.2 million accounts since 2015 for promoting terrorism

Twitter said Thursday it had permanently suspended roughly 1.2 million accounts for "violations related to the promotion of terrorism" between August 2015 and December 2017. More than 270,000 were suspended in the second half of last year.

Why it matters: Terrorist content is just one of the many ills facing online platforms such as Twitter, YouTube and Facebook.