Wow, that movie isn't good at all. Liked the general idea but it suffered on its story, execution + unauthentic acting: Lazy writing (story line + dialogues) and Radcliffe not convincing at all. Doesn't matter if it is him as a FBI-guy, Ex-Marine or Skinhead, just not eating it up from him. Most of his scenes are way over the top - guess it's a mixture of his lack to get it done and the writing. A snitch like that won't survive that long until his cover is blown. The FBI is a laughingstock in this one, too. He didn't even get a new name and one of the black guys standing on the other side directly recognizes him, while he's participating in his first demo and yelling fascistic slogans. Not to mention how his background wasn't covered either. Just coming up with that "Marine who served in Iraq"-story without providing any proof in case that anyone gets suspicious of him, okay.