David Hogg, the Parkland, Florida mass shooting survivor at the center of a right-wing “crisis actor” conspiracy theory, slammed the president’s eldest son Donald Trump Jr. on Monday for promoting the “disgusting” accusation on Twitter.

Trump Jr. “liking” two tweets that suggested Hogg was an actor paid by gun control activists is “disgusting,” the Marjory Stoneman Douglas student told CNN’s Anderson Cooper.

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“Along with the other trolls online, he’s only proven the point that the apple doesn’t fall far from the tree on maturity,” Hogg continued, “especially from the president.”

Nevertheless, Trump Jr.’s apparent endorsement of the conspiracy theory “quadrupled” the survivor’s Twitter followers and kept his and his classmates’ crusade in favor of gun control in the wake of the Parkland shooting in the media, Hogg said.

Watch below, via CNN: