It's also called called blaming others.
It's not just Indians, I mean Native Americans, I mean Indigenous Americans: it's blacks, gays, it's people with disorders, it's lots of "groups."
So I ask again: what will changing your 'name' change? Is it offensive to be called "gay?" Or is it offensive to be lopped in with what it means to be "gay?" And if it's the latter, how long until the new name takes the same effect?
So who's being offensive? The ones using the 'name' or the ones defining it?