Who is Brett Kimberlin?

He's a terrorist turned leftwing activist. I'll let Stacy McCain catch you up on the details. Right now, the terrorist turned activist -- who gets money from major Democrats including Teresa Heinz Kerry and Barbra Streisand -- is apparently threatening McCain's family. Given Kimberlin's history of bombings, harassment and thuggery, Kimberlin is unfortunately a real threat and the state of Maryland needs to step in and stop him.