New York City Mayor Zohran Mamdani used an America 250 event on Friday to criticize U.S. Immigration and Customs Enforcement, billionaire Elon Musk, and what he described as an “arena of supremacy” in America.

“We see the wealthiest country in the history of the world, one where children go to sleep hungry while the world’s first trillionaire hungers for more,” Mamdani said, an apparent reference to Musk following the recent SpaceX public offering. He also criticized what he described as concentrated wealth and political influence.

“We see monopolies that dominate every industry, and oligarchs who buy elections,” he said. Mamdani reserved some of his strongest remarks for federal immigration enforcement.

Speaking alongside eight recently naturalized U.S. citizens, Mamdani celebrated the country’s immigrant history before turning his attention to modern political and economic issues

Later in the speech, he claimed ICE was “invading” New York neighborhoods.

“We see America each time neighbors link arms with neighbors without asking how long they have lived here or what papers they have as ICE invades our neighborhoods,” he said.

“Over the years that followed, despite laws enacted by the federal government to bar their entry, despite sweatshop fires that killed hundreds of women, despite riots aimed at their very existence, immigrants made homes here in New York City, and they helped to make New York City,” the mayor griped.