I've been asking that question, too.
No earthly idea.
Only guess because it might make some people make an analogy between the Confederate flag and the gay flag "causing" violence.
They didn't want any "wisecracks" being made.
Seems to be working.
NOBODY is asking about that.
BTW, did they confiscate all of the gay pin-up pics too?
Your thought about the analogy is the only thing that makes any sense.