The digital walls are closing in on Alex Jones, the social media shock jock whose penchant for right-wing conspiracy theories and viral misinformation set off a heated debate about the limits of free speech on internet platforms.

Facebook said on Friday that it had suspended Mr. Jones from posting on the site for 30 days because he had repeatedly violated its policies. The social network also took down four videos posted by Mr. Jones and Infowars, the website he oversees.

“We received reports related to four different videos on the pages that Infowars and Alex Jones maintain on Facebook,” a Facebook spokeswoman said in an emailed statement. “We reviewed the content against our Community Standards and determined that it violates. All four videos have been removed from Facebook.”

The 30-day ban applies only to Mr. Jones personally, not to Infowars or to any of the other administrators of his Facebook page, which has nearly 1.7 million followers. Those people will still be able to post to Mr. Jones’s page as long as their posts don’t violate the site’s policies — meaning that Mr. Jones could still appear in videos and stories posted to the page as long as he does not post them personally.