Hillary Clinton joined a protest held by members of the Culinary Workers Union outside of Donald Trump’s Las Vegas hotel on Monday, slamming the real estate mogul’s comments on the campaign trail.

“Some people think Mr. Trump is entertaining,” Clinton said, according to Buzzfeed News. “But I don’t think it’s entertaining when somebody insults immigrants, insults women.”

Clinton expressed her support for workers’ rights to organize as the Culinary Workers Union rallied to organize the workers at Trump’s hotel.

“If you are going to run for president, then represent all of the people of the United States,” she said, according to CNN. “I wanted to come by to lend my voice to all yours and I wish you well in these efforts.”

Clinton’s rivals, who will all attend the first Democratic debate in Las Vegas Tuesday night, did not join her at the rally. But a car wrapped in Sen. Bernie Sanders’ (I-VT) drove through the protest on Monday, according to CNN.