That's not how it works. You may be able to sue later for lack of probable cause (see: http://en.wikipedia.org/wiki/False_arrest ) but you still can not resist the arrest even if you are sure you are right.
Doesn't this conflict with that law that says citizens can intervene and stop cops from arresting someone? It was something to do with citizen arrest and arresting the cops themselves if they do something very bad.
What law is this? I've never heard of such a law. Normally if police are corrupt then the next level up law enforcement is called, i.e. city->state->federal
That's not true. It is specifically on the books that you can resist unlawful arrest up to and including killing the officer. People have done it and not received penalty for it.
Read the wiki article I linked. You can only resist unlawful arrest by a police office in very very limited circumstances. Simple mistake by the police is not included.
You are probably confusing resisting arrest by someone who is not actually a police officer.
