Violence At Trump Events, But Who's To Blame

Trump says "No one has been hurt" at his ralleies after a weekend of campaign events marred by protest & violence, which included the cancellation of a rally Friday night in Chicago and arrests, clashes between supporters and protesters and a would-be stage crasher. Trump's GOP rivals and Hillary Clinton blame the Donald for the chaos at his events. Mr. Trump blames Bernie Sanders supporters and BLM protesters for the clashes. MoveOn.org says Trump supporters have been put on notice but they're not saying what that's supposed to mean. What's going on and who's fault is it? Let's talk about it.