Are You Trying to Break the Echo Chamber?

CNN's John Sutter talks with author and gun-control advocate David Frum about how to break through the echo chamber. He says there are a lot of people on both sides of the political spectrum who don't like guns, but they're starting to change their minds. "I get why you don't think these things should be illegal," he says in an interview that airs tonight at 10 p.m. ET/PT; tomorrow morning at 9 a.m. PT.