President Trump traveled on Wednesday to Dayton, Ohio, and El Paso, where mass shootings killed 31 people. Our colleagues described the scene in both cities. Guests: Mitch Smith, who covers the Midwest for The New York Times, and Michael Crowley, a White House correspondent. For more information on today’s episode, visit nytimes.com/thedaily.  Background reading: President Trump began a day set aside for healing in Dayton and El Paso by lashing out at rivals, using the kind of divisive language that prompted protests in both cities even before he arrived.Across El Paso, some residents worried that Mr. Trump’s visit might do more harm than good.