Twitter, YouTube, Facebook, and Whatsapp have all been (and continue to be) exploited to spread messages of hate and ignorance. It seems strange to me that Facebook is coming under so much criticism relative to the other platforms when, from my perspective, they've also been the most proactive about trying to address these issues. I haven't heard anything from Twitter recently regarding trying to minimize hate speech and ignorance on its platform (and its the worst service for divisiveness, in my opinion). Google only just recently demonetized anti-Semitic and anti-vax material on YouTube and only after significant backlash from its advertisers (not its users who have been calling for a response for years). Why is this?

That article doesn't really say what Facebook's "role" was. The closest thing is this:

> "It was used to convey public messages but we know that the ultranationalist Buddhists have their own Facebooks and are really inciting a lot of violence and a lot of hatred against the Rohingya or other ethnic minorities," she said.

It basically sounds like the bad guys were using Facebook groups to communicate. They could have done the same thing on IRC or anywhere else on the internet.