I recall a time back in 1975 I was travelling from Memphis to Dallas via bus. I was wearing my Navy uniform, no ribbons yet, and relatively new to the Navy. During the trip, I forget exactly where, but some young woman came up to me, spat on me and called me a baby killer. I was like......WTFO???? I had even been in Nam, will never go to Nam and was still in training. Fortunately for her, I don't go around beating on women.
Best I can tell you is to de-Mil your vehicle as much as possible. People like to attack vehicles because they can't fight back. I know it sucks, but it could get worse. After I returned from Gulf War 1, people had some respect for the military. I guess that's because it was a quick conflict and wasn't as drawn out as OIF has become. I'm afraid the anti-war sentiment is only going to get worse. It doesn't help when we have politicians voicing their uneducated opinions, toeing their party line, and a media that's subversive as any communist ever was in the McCarthy era.