This in my opinion is far worse than celebrating after a touchdown. Players getting in other players face after every play to me is poor sportsmanship. and it lasts the whole game. Seems this gets worse every year. It takes a lot for a player to shrug it off when someone is constantly in your face. I say suit up and play ball and keep your mouth shut. It's ok to congratulate a teammate after a good play but not to knock a man down then stand over him so he can't get up as if you are daring him to get up.