R.F.K. Jr. Claims Censorship After Facebook and Instagram Briefly Block New Ad

Robert F. Kennedy Jr. has made censorship — specifically, claims that the government, news media and tech platforms have tried to stifle his message — a cornerstone of his independent presidential campaign.

This weekend, Mr. Kennedy got more fodder for his argument when Facebook and Instagram blocked a link to a new, sleekly produced 30-minute ad supporting his candidacy. The link appeared to have been blocked from Friday late afternoon until Saturday around midday.

Meta, which owns both platforms, called the episode a mistake. Andy Stone, a spokesman for Meta, said the link had been incorrectly flagged as spam. “It was mistakenly blocked, and it was corrected within a few hours” after the issue was discovered, Mr. Stone said.

Tony Lyons, a founder of American Values 2024, the super PAC that paid for the ad, said that the group planned to sue Meta in federal court, accusing the company of censorship and of violating First Amendment rights to free speech.

“When social media companies censor a presidential candidate, the public can’t learn what that candidate actually believes and what policies they would pursue if elected,” Mr. Lyons said. “We are left with the propaganda and lies from the most powerful and most corrupt groups and individuals.”

The ad, which is narrated by the actor Woody Harrelson and takes the form of an infomercial, was produced by Jay Carson, an informal adviser to Mr. Kennedy who is also a Hollywood screenwriter and a former top aide to Hillary Clinton.