The uproar over this DHS rightwing extremist report seems a but overwrought to me. A lot of the outrage seems to have started with Michelle Malkin, but the paranoia began with Roger Hedgecock. (Whereas other reaction, like Stephen Gordon, seems a bit more measured.)
Anyway, yes, I think the DHS bulletin is offensive and misguided. I'm not sure it's worth getting so worked up about, though.