Thats not far of, I read a recent FrontPage article about how the radical left, including Sheehan, gets many supporters from among the David Dukes, National Socialist Movement, Aryan Nations and even Stormfront. They all use the same anti-Bush, anti-jew and anti-freedom rhetoric after all.
I'll one up that. The Duke et al crowd are just as dangerous as any left wind revolutionary group - if they are not investigated and stopped, they'll be just like the Weather Underground.