As conspiracy theorists accuse survivors of the Florida school shooting of being “crisis actors,” President Trump on Saturday retweeted a fringe radio host who once used identical language to peddle hoaxes about the Sandy Hook Elementary massacre in 2012.

The host, Wayne Dupree, has also repeatedly attacked survivors of the high school massacre in Parkland, Fla., who are pushing for new gun laws after 17 of their schoolmates and teachers were killed with an AR-15 rifle last week.

Trump’s retweet of Dupree had nothing to do with guns. It was also four years old and didn’t seem particularly relevant to anything in the news.

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But critics, noting Trump’s history of retweeting far-right figures, accused him of deliberately promoting a school shooting conspiracy theorist just as gun control opponents are trying to discredit the Florida teens with similar hoaxes.

“The President of the United States is lifting up a voice that is smearing the survivors of the Parkland massacre,” the liberal news outlet ThinkProgress wrote as it dug up Dupree’s history of fringe theories.