United Auto Workers Union President Shawn Fain had some tough words for former President Donald Trump on Wednesday.

Donald Trump is a scab ! the labor leader yelled in a speech to members in Washington, thumping his finger on the podium for emphasis.

The insult was one of many Fain tossed at Trump as he announced the unions endorsement of President Joe Biden for reelection.

Fain cast Biden as a steadfast ally to unions and the working-class and Trump as the opposite. He said the former president was a friend to the billionaire class and sought to undermine workers at the benefit of the rich.

Donald Trump is a billionaire and thats who he represents, Fain said. If Donald Trump ever worked in an auto plant, he wouldnt be a UAW member hed be a company man trying to squeeze the American worker.

He pointed out that Biden publicly stood with the UAW members during their recent strike against Ford, General Motors and Jeep parent company Stellantis, when he visited a Michigan picket line in September.

Trump, on the other hand, had the opportunity to publicly support striking GM workers when he was president in 2019, but he declined to do so, Fain said.

He said nothing, he did nothing not a damn thing, because he doesnt care about the American worker, Fain said.