1115
It's only offensive to a specific group of people
(slrpnk.net)
People tweeting stuff. We allow tweets from anyone.
RULES:
So the OP described an experience of black history erasure. You chimed in with a hypothetical movie that you wouldn't be offended by but wouldn't enjoy, but you used the term "offended" just so you could participate and make the experience about you?
Confusion appears to be immensely attractive.
To answer your question, no it is not valid. The fact that you don't actually stand by the word offended really answers yourself.