Yes it is. You're denying a person's right to an identity. It is a form of cultural slavery. You're insisting a group who does not share anything with you assimilate into your ideals because YOU took THEIR identity from them.
If there is anything more structurally and socially offensive, I don't know what is it. And don't play the "if they don't like it, get out." If you don't like the fact it's a horrible and offensive thing, why don't you leave? FFS.
Apparently you don't care for the hundreds of thousands of African-Americans who get no individual identity because another, unconnected, group stole it.