Now we're dealing with a younger generation of terrorists that are very, very savvy with computer skills, very savvy over the Internet, and very savvy with social media of the likes that we have never seen before.

The phenomena here is the foreign fighter threat, the revolving door from Europe to the region in Iraq and Syria and back through Turkey, back into Europe. And that's what happened in the Paris attackers.

200,000 ISIS tweets a day, 1,000 investigations in all 50 states. It's really hard to stop all of it. But we have to get control over this Internet propaganda that is poisoning the minds of the United States.

Michael McCaul Quotes