Redskins owner has already trademarked 'Warriors'. He was going to use it for his arena football team, so it wouldn't be that hard for them to switch over. Not sure why people keep saying stuff like "well when I think of Redskins I think of tribal warriors bravely fighting for their people etc et". The original owner of the Redskins named them that because he was a racist and a white supremacist. He did not mean it as a compliment.
Do not know about the original owner or any of his story but why would anyone want to name their team after somone they found "lesser"?