GOP pollster says Trump's 'The Purge' rhetoric isn't effective with undecided voters

Donald Trump on Sunday put forth a policy that many observers suggested mirrored the plot of the movie "The Purge," but Republican pollster Frank Luntz says that type of rhetoric isn't effective on the types of voters Trump is trying to win over.

CNN's Kaitlan Collins live on the air played a clip of Trump's rally in Pennsylvania from earlier that same day. Trump at that rally on Sunday said that police aren't allowed to do their jobs and that all they need is "one really violent day,"...