Twitter's ex-CEO stepped up the Silicon Valley beef and attacked Facebook for being a hotbed of anti-vaxxer Bill Gates conspiracy theories

· There's a big spat between Twitter and Facebook right now over the nature of free speech and censorship online.
· Facebook CEO Mark Zuckerberg appeared on Fox News on Thursday to say Facebook won't apply fact-checks to political figures like Trump, following Twitter's decision to fact-check two of the president's tweets...