 I'm Juana Summers. And I'm Elsa Chang. Little is publicly known about the ideology of the gunman who fired at former President Trump at a campaign rally. But extremism experts say there have been signs that things were building to this moment. I thought that this was something that we were likely to see over the last year or two, given the conditions that lead to assassinations, political assassinations. And there's a fight for union votes in the U.S. election. Where does the labor movement stand?