Warren became one of the most prominent political figures to show their support for Mamdani, the leading candidate for New York City mayor.

Zohran Mamdani, the Democratic candidate for mayor of New York City, appeared with Senator Elizabeth Warren to highlight his plan for free universal child care.

“If Trump sees a number or a fact he doesn't like, he claims that it's a conspiracy against him,” says Nobel Prize-winning economist Paul Krugman. He joins MSNBC’s Lawrence O’Donnell to discuss Donald Trump’s push to replace career civil servants at the Bureau of Labor Statistics with Trump loyalists.