Granted, I haven't seen the data the people leaving FB are using to make their arguments, but at least they are saying that misinformation and posts arguing for assault or killing of individuals are much more prevalent among "conservative" groups:

> We have a very good idea which actors in the US drive the largest volumes of this kind of content. In the last 14 days, the 10 pages responsible for the largest concentrated volume of likely violating Hate Speech comments have been:

Breitbart

Fox News

The Daily Caller

USA Patriots for Donald Trump

Donald Trump for President

Donald J. Trump

Ben Shapiro

Conservative Tribune by WJ

US Chronicle

The Western Journal

These pages, and a few perennial others that didn’t happen to make the top 10 in the last two weeks, but that you can find by browsing the dashboard, are filling our platform with violent and hateful content at a rate and concentration that is simply overwhelming…