I saw a video a couple of weeks ago that may explain why she got flipped off. It is far too vulgar to post a link here. Basically it said that while all the men and women in the armed forces are out there risking their butts, most of America is content to simply sit back and put a sticker on their SUV and that makes them think they're "doing their part" and they're "patriotic." The video says that you need to do more than just put a sticker on your car, especially an SUV that guzzles gas and ostensibly supports our enemies by putting money in a region that breeds terrorism.
I am not defending this video, I am merely reporting what it said. Go look it up if you want the full version. It shouldn't be too hard to google.