Tonight on the Last Word: Global markets plunge over coronavirus fears. Dems prepare for the final debate before Super Tuesday. Also, a New York jury finds Harvey Weinstein guilty of two felony sex crimes. Cecile Richards joins Lawrence to discuss the Weinstein verdict in the era of Donald Trump. Plus, Senate Democrats demand new Russia sanctions over interference in the 2020 election. And Jill Wine-Banks discusses her new memoir titled, “The Watergate Girl.” Jennifer Palmieri, Anand Giridharadas, Molly Crane-Newman, Cynthia Alksne and Rep. Denny Heck also join Lawrence O’Donnell.