I don't know--that fight between John Scott and Patrick Kane at the all star game looked pretty polite.
Shaking hands after beating on each other in a 7 game series is pretty polite.
Wearing a tuxedo to screech the national anthem is polite (ok that's Boston but whatever)
The coaches all dressed in suits and ties is polite.
Asking a guy if he wants to fight before you hit him in the face is polite. (I forget who it was but some 5ft 8 forward tried to take on Chara last year and Chara just pushed him away and looked annoyed.)
And compared to Irish hurling hockey is about as genteel as chess.