Mark Zuckerberg called Trump, said he was putting Facebook in difficult position

Correction for the title, Trump actually called Zuckerberg and not the other way around:

> Later that day, Trump phoned Facebook CEO Mark Zuckerberg. During the call, Zuckerberg "expressed concerns about the tone and the rhetoric," according to a source familiar with the call.

Blame twitter for that. They started didn't start with trump. They started one with the government that regulates them.