Hip-hop and rock fans united in their condemnation of Donald Trump after the president went after Beyoncé, Jay-Z and “The Boss” Bruce Springsteen during a campaign rally in Minneapolis on Thursday night.

Trump bragged about the size of the crowds he attracted during the 2016 campaign and mocked his then-Democratic rival Hillary Clinton, who had a series of high-profile musicians perform at her events.

“I didn’t need Beyoncé and Jay-Z,” said Trump. “And I didn’t need little Bruce Springsteen and all of these people.”

Trump then claimed, without offering any evidence, that musicians like Springsteen would sing two songs at Clinton’s rallies before leaving and taking most of the crowd, while “she is still talking in front of the same lousy crowd.”