"We have no idea what the role of mental illness is," Vanderbilt professor Jonathan Metzl said about mass shootings. "And so it seems to me like a code word and a distraction and a deflection."We spoke with Metzl, former FBI agent Michael German and The New York Times' Charlie Warzel about the response to a deadly weekend in El Paso and Dayton.Want to support 1A? Give to your local public radio station and subscribe to this podcast. Have questions? Find us on Twitter @1A.