I won't embellish this since the video speaks loudly enough.
"I will stand against you and so will millions of others. We believe in something. You in the media and most in Washington don't. The radicals that you and Washington have co-opted and brought in wearing sheep's clothing — change the pose. You will get the ends.
You've been using them? They believe in communism. They believe and have called for a revolution. You're going to have to shoot them in the head. But warning, they may shoot you."
I was able to find the complete transcript passage @ Fox from which this excerpt and video clip were taken. That passage is included below the fold, if you want the context.
It shouldn't change your understanding of this, I don't think. But that may be because I find it tough to understand his rants frequently.
[UPDATED: with commentary from Bradblog regarding the would-be shooter in California, Byron Williams. This video clip was his instruction, apparently. Go below the fold for update.]