This is a very touchy issue. After all, they were decimated and had their land taken from them. Some say that this isn't the usa, this is still native land that just happens to be illegally occupied by the white man. Can you argue against that?
Let's say if Scotland gets invaded by England, and now Scotland is no longer Scotland, but now just part of England. And then the English make a team called the Scots right in Glasgow, England. What do you think the reaction would be?
The white man conquered the red man in a very brutal, some say shameful, way. These logos are a reminder of that.