Watch for acts of provocation (violence?) from the peace-loving progressives.
For those that go: Vet everyone in your party; bring camera's, Video recorders, sound recorders, use them; Loudly point out disruptors/trolls;
The Libs will DEFINATELY be agitating for a violent/hostile confrontation. Their friends in the MSM have an empty picture frame with a caption that reads "Tea Parties/Glenn Beck groups get violent". They are drooling over the prospect of filling the frame with pictures and video.