A gunman opened fire Thursday, killing five journalists at the Capital Gazette in Maryland. Although there is no evidence so far that politics motivated the shooter, that did not stop some from blaming the president and his repeated attacks against the media, creating an environment that has made the press more vulnerable.

“Beat the Press” Host Emily Rooney was joined by Dan Kennedy of Northeastern University, Callie Crossley of WGBH News, Tom Fiedler of Boston University and Adam Reilly of WGBH News.