They didn't.
The video is here.
One old guy in a hat says "bomb Obama" and makes a symbolic "gun" gesture. There were other looneys there, and some racists, but I ran through it twice and heard nothing else even remotely threatening.
If the old coot ever ran into any Secret Service trouble, I couldn't find it.
Did you watch the video before this, or were you just taking some blogger's word for it?
