Sorry mate, but you really don't know anything about Anonymous if you think they are a defined group. They aren't. There is no membership to Anonymous. There is no 'Anonymous' hacker group. It's a mask, and nothing more. If I were to hack the CIA and leave a message from "Anonymous" it would be just as valid as any previous Anonymous actions. We are all Anonymous if we choose to be.
It's very possible that the US Government is using the Anonymous name to sway the publics perception, but they are not the "Anonymous" group. They are just another person like you or me. They are nobody. They are Anonymous(literally).