In case you weren't already appalled by the trucks' environmental damage (less than 10 mpg), how dangerous they are (8,500 pounds), or their tax inequity (owners get a $10,000 federal gift), here's one more thing to hate about them: the company is trying to posit itself as a force for good.
Check out hummerhelps.com (or don't, I don't care). It's a thin collection of stories about how Hummer owners have done something good in a crisis.

Needless to say, there's nothing surprising about any of the stories. Basically, boneheads with various Hummer models drive their urban tanks into the middle of a bad situation. Then they freely admit that others with regular cars are doing exactly the same thing ("Among those that etched an imprint into my heart was Catherine, whose car was still running after Katrina, and was spending every cent she had to make trips to shelters...") if not more.
Don't believe the hype. Hummer is still as evil as it gets, no matter what PR junk they peddle on their website.