2020 Candidates' Focus on Inequality Shows "Shift in the Conversation" Within Democratic Party

Ten Democratic candidates took the stage Wednesday for the party's fifth presidential debate, held in Atlanta, Georgia, and co-hosted by MSNBC and The Washington Post. One of the most memorable moments of the night was a disagreement between Senators Elizabeth Warren and Cory Booker over Warren's proposed tax on the wealthiest Americans. Her proposed wealth tax would kick in on assets of $50 million and higher. Both candidates agreed that inequality is a major issue in the U.S., but Booker said wealth taxes in other countries have not been effective and that there are better ways to raise revenue. The issue of economic inequality was a major theme throughout the debate. We speak with Gabriel Zucman, professor of economics at UC Berkeley. He is co-author of the new book, "The Triumph of Injustice: How the Rich Dodge Taxes and How to Make Them Pay."