To "go indian" is for a Native American to act how "indians" would when they'd hunt or fight. SOMETIMES involves a couple drinks, and things that are sharp, hard, or they smash.
Fine displays of this behavior is shown in Dances with Wolves, Last of The Mohicans, movies with wild fight scenes, and some real live people. The people often scream too (Not in pain).
1. I'll go indian on you.
2. The place is totally wrecked. They went indian.
3. Steve from The Outsiders is a good example of "going indian". The screaming, fighting, and the look on his face. And he's not even brown!