New York City Mayor Bill de Blasio launched his presidential campaign on Thursday, joining a crowded field of 24 Democratic contenders.

“Donald Trump must be stopped,” he said in a video announcing the launch of his campaign. “I’ve beaten him before and I’ll do it again.”

“I will take on the wealthy. I will take on the big corporations. I will not rest until this government serves working people. As mayor of the largest city in America, I’ve done just that,” he added.

Read more at The Hill.