Mike Rogers: “Remember the 9/11 hijackers, some of those were students who were here on student visas.”

All of that activity is fed online and through the internet, through conversations and through this heated and wrong-headed violent rhetoric, and their violent terminology is very, very concerning.

That self-radicalization can be really dangerous.

They are encouraging a lot of people to get worked up to cross that line between what would be normal political discourse into radical, aggressive political behavior, including attempted murder, which you just saw in the UFC fights.

They're calling people Nazis and anti-American.