I think if you are looking to be offended, you will surely find something to be offended by. This whole thing is being used as a bludgeon by the perpetually offended.
The name was meant to honor, not disparage, would it even make sense to name a team because you wanted to denigrate another race?? Of course not.
You name a team in a way that you feel projects courage, strength and power. This name was chosen to honor the native American warrior tradition and ethos.
Basically they were saying "We think you guys are pretty badass and we want people to respect and fear us on the playing field as in the past you were respected and feared on the battlefield" Not a bad sentiment at all in my book.
The PC crowd and the perpetually offended need to get over themselves and protest something that at least has some significance like people in this country going hungry or jobless, or homeless veterans. Do something meaningful for a change. Instead of bloviating over something only a handful of people even care about and was never intended to be offensive in the first place, in fact, quite the opposite.