I love the Celtics, and I love them to win. Then, after that, I like fair play. I don't care a bit about taunting, celebrating and all that. I'm ok with trash talking and LeBaby dancing and not respecting opponents. As some have posted, that makes it sweeter when the Celtics crush them.
What I can't stand is double standards in officiating, star treatment and all the "hero ball" and "be like Mike" stuff. I hate Co-b because of that, not because of his fake toughness and clutch reputation. Those things are overrated and overhyped.
About being classy... hard fouls are not classless. The only thing I'd call classless on the court is risking someone's health. For me, that's the difference, and while I don't care if you help an opponent who is on the floor, I like the players to care about health. Basically, when someone does what Bynum did on Beasley, pushing him while he was in the air is a clasless move. Hitting someone who can defend himself, like Fisher did, is ok with me, Kaman's health wasn't on the line.
Off the court, players can do whatever they want, except hurting people. You can't ask them to be classy, they are who they are... but when classy people like Doc or Ray are on your team, you have to be proud of them.