For the last few weeks, Professor Mark Bray has had to brace himself when he opens up his email,

because he's never quite sure what kind of messages he's going to find inside.

The first one simply said, I'll kill you in front of your students.

That's simple.

Another one said, I'm going to burn down your house and kill you in front of your students. That's simple. Another one said,

I'm going to burn down your house and kill you when you run out. Mark teaches history at Rutgers University. A few years back, he wrote this book, Antifa, the anti-fascist handbook. It's a cheeky

title for what is essentially the history of a movement.

Last month, when President Trump declared Antifa was a domestic terrorist organization,

that is when his inbox started to fill up.

Not this most recent Saturday, but the previous Saturday I was watching, Yankees, Blue Jays,

Game 1, the playoffs, and bottom of the first, I got an email. It said something like, we're

watching you when it had the address. And I knew I had to leave my home. Right away.

Well, yeah, pretty much.

Mark wants to make something very clear.

He's not a member of Antifa.

After conducting extensive interviews, he certainly understands Antifa's internal logic,

but he's not their spokesperson.

Not like that matters anymore.

Where are you right now?

I'm in Spain.

I'm not advertising, you know, where in Spain.

You know, I do have security concerns.

...