Dear Boston Bruins fans, by now it should be obvious that we don't like you. Clearly you should be seeing that the NHL referees bias every game in favor of the opposing team at every opportunity.

We have been told to do that by the upper management in the league because, well, they don't like you either.

In summary:
It was not a sucker punch
It was a clean hit
You did not just see a buffalo player punch your guy in the face and have a penalty called on Boston

The NHL Referees