Cities Reimagine Police Traffic Stops; 'Citizen Kane' History

Studies show that police traffic stops disproportionately affect communities of color, but many in law enforcement maintain the argument that the stops help keep their communities safe. NPR's Eric Westervelt details the latest reform efforts. And, Oscar-nominated film "Mank" is about the writing of the screenplay for the 1941 classic "Citizen Kane." We take a look at the movie's history.