On Morning Joe, MSNBC co-host Willie Geist noted the emerging tensions between socialism and capitalism in the nascent Democratic primary fight, and he recalled how Warren, one of the top candidates in the race, called herself a capitalist "down to my bones."
"I believe in markets," Warren said. "I see the benefits that markets can produce."
Warren said Wall Street regulators in the past had allowed big banks to get wealthy on the backs of "millions of families" and crashed the economy during last decade's mortgage crisis.
"When there's a cop on the beat, those markets start to work again," she said. "Banks, in that case, are forced to develop their profit models, not on cheating people, but on actually offering a better product."
"Despite its flaws ... Do you believe capitalism over the course of history has been a force for good?" Geist asked.