For background, see this dailykos post written by a friend of Cindy Sheehen:

"The invasion of Crawford ..
Look, let me tell you how this got started. On Wednesday, parents of soldiers who were going to the Vets for Peace conference (many of us are both veterans and soldiers of parents) began e-mailing each other to coordinate who was staying where, and other typical events that people do in advance of conferences. We were all flying into Dallas the following day. We all were pissed off hearing Bush's condescending pap about 14 soldiers killed that day. Cindy said, you know, I think I'll just go to Crawford while I'm in TX. I and several other parents said "us too!" and the word got out to the veterans than night and the following day, and it just snowballed from there.

I was there Saturday and marched with Cindy where she, like Rosa Parks, decided to "stand up by sitting down."

-snip-

That post was in a diary that alerted members of that community {and lurkers like me} to the fact that several Clear Channel radio stations were planning an anti-Sheehen, pro-Bush barbecue in Crawford, Texas on Saturday with free food and free beer for attendees, including members from a nearby military barrack who were encouraged to come and chastise Cindy Sheehan for her stance.
The founders of this event eventually backed off from this idea, supposedly because of a "lack of suffienct local interest".

For more, see Cindy needs help