Will US President Donald Trump ever stay off controversies?

Few days after NFL players protested against him over a comment he made, Facebook chief Mark Zuckerberg has fired back at him after he accused the leading social network of being "always anti-Trump".

Zuckerberg rejected the notion, countering that Facebook is working to ensure "free and fair elections" with an online platform that does not favour one side over another.

Zuckerberg's post at Facebook came after Trump accused the social network of bias in a morning tweet that read:

"Facebook was always anti-Trump.The Networks were always anti-Trump hence,Fake News, @nytimes(apologized) & @WaPo were anti-Trump. Collusion?"

Early morning Twitter tizzies have become a hallmark of Trump's presidency.

"Trump says Facebook is against him. Liberals say we helped Trump," Zuckerberg said in his post.

"Both sides are upset about ideas and content they don't like. That's what running a platform for all ideas looks like."

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