I’m with Mau here. Yes, he has every right to bring the sign into the arena. And the arena, hired out by the university, has every right to confiscate it.
But it shows a clear immaturity. It’s a matter of class, grace, and appropriateness, regardless of whether he’s right or wrong. Yeah, you get your tantrum on national TV. But it has no effect, and is just a bad look during a reunion game between two old rivals. What, is that the start of some nascent movement?
You’re free to disagree, just as I disagree with you.