-dresses up as an alien-
that’s appropriating alien culture! racist!
comparing existing races and cultures to aliens, that have yet to be proven even exist? Invalid argument.
that is rude to the aliens you can’t just deny their existence!! racism!!
1. I didn’t deny the existence of aliens; I said the haven’t been proven to exist yet.
2. Your argument is an exaggeration that attempts to silence people of the cultures that are appropriated.
3. Your argument is an invalid argument; it is a slippery slope fallacy.