President Donald Trump has asked why the 'radical left wing media' is still allowed on Facebook and Twitter after a string of social media bans on controversial, mostly right-wing, figures sparked uproar.

'When will the Radical Left Wing Media apologize to me for knowingly getting the Russia Collusion Delusion story so wrong? The real story is about to happen!' Trump tweeted on Saturday morning, apparently referring to revelations of FBI surveillance on his campaign.

'Why is @nytimes, @washingtonpost, @CNN, @MSNBC allowed to be on Twitter & Facebook. Much of what they do is FAKE NEWS!' he continued.

It followed a string of retweets of criticism aimed at Facebook for its recent ban of several controversial figures, which the company labeled 'dangerous individuals'.

Trump also highlighted the case of conservative actor James Woods, who was suspended from Twitter for a tweet reading ''If you try to kill the King, you best not miss' #HangThemAll,' a paraphrase of the Ralph Waldo Emerson quote.

President Donald Trump has asked why the 'radical left wing media' is still allowed on Facebook and Twitter after the companies banned controversial, mostly right-wing, figures

Trump also highlighted the case of conservative actor James Woods, who was suspended from Twitter for a tweet paraphrasing a Ralph Waldo Emerson quote

Facebook's ban on Thursday included right-wing personalities Paul Joseph Watson, Paul Nehlen, Milo Yiannopoulos and Laura Loomer, as well as radio host Alex Jones and his website, Infowars, which often posts conspiracy theories.

Facebook also banned Nation of Islam leader Louis Farrakhan, an ally of left-wing Democrats.

Trump retweeted former InfoWars editor-at-large Watson, who wrote: 'The support for me has been incredible. This could actually lead to some genuine change. Keep up the pressure. Don't let it rest.'

Trump's retweets included a range of commentary blasting Facebook's ban as politically-motivated censorship.

'When did we decide, as Americans, that it's ok fo govt & 3d parties to censor/ curate our info? That we cannot be trusted with unfiltered info?' read one tweet by Sharyl Attkisson, host of the Sinclair Broadcasting television show Full Measure News.

'Lmao at establishment conservatives who think they won't be labeled the new 'dangerous' / 'extremist' voices when those to the right of them are all banned. Good luck with that one guys,' wrote author and filmmaker Lauren Southern.

Facebook CEO Mark Zuckerberg drew criticism after the company banned a range of controversial figures on Thursday

Facebook said the newly banned accounts violated its policy against 'dangerous individuals and organizations'.

The company says it has always banned people or groups that proclaim a violent or hateful mission or are engaged in acts of hate or violence, regardless of political ideology.

It added that when it bans someone under this policy, the company also prohibits anyone else from praising or supporting them.

It is not clear what events led to Thursday's announcement. In a statement, Facebook merely said, 'The process for evaluating potential violators is extensive and it is what led us to our decision to remove these accounts today.'

Asked to comment by AP on the bans, Yiannopoulos emailed only: 'You're next'.

Jones reacted angrily Thursday during a live stream of his show on his Infowars website.

'They didn't just ban me. They just defamed us. Why did Zuckerberg even do this?' Jones said, referring to Facebook CEO Mark Zuckerberg.

Jones called himself a victim of 'racketeering' by 'cartels.'

'There's a new world now, man, where they're banning everybody and then they tell Congress nobody is getting banned,' he said.

Also on Saturday, Trump tweeted about North Korean leader Kim Jong Un and Russian President Vladimir Putin.

He said the door was still open to de-nuclearization talks with North Korea after a weapons test on the peninsula early on Saturday, and said a phone call with Putin on Friday was productive.