On “Morning Joe” Thursday, they had a guest named Dr. Hany Farid, a computer science professor at Dartmouth College. It was a brief segment with Dr. Farid, but he touched on something I’d never even considered. One of the problems with radicalization of some of these home-grown terrorists who go on rampages is that they can find hate-speech and other radical postings on the Internet with ease. Even if one social media platform blocks a particular videos, like of people being beheaded, it can just pop up on another site later.