Rep. Alexandria Ocasio-Cortez said in an interview on Monday that she believes a system that allows people to become billionaires is “immoral.”

The New York Democrat made the statement while responding to a question from writer Ta-Nehisi Coates at a Martin Luther King Jr. Day event in Harlem.

“I do think that a system that allows billionaires to exist when there are parts of Alabama where people are still getting ringworm because they don’t have access to public health is wrong,” Ocasio-Cortez said.

She clarified that billionaires themselves are not morally questionable — but the economic system that allows them to grow so wealthy is the problem.

“I don’t think that necessarily means that all billionaires are immoral,” she added. “It’s not to say someone like Bill Gates or Warren Buffet are immoral people. I don’t believe that.”