bad hits vs safe hits in the NHL

[sharg]

If you are a hockey fan you would have noticed an increase in  head injuries in the NHL as well as other major injuries.  Bad hits, sometime after a call, are sending the boys into the boards head first. I know fighting is a part of the game but things have changed so much and players are so controled/limited in what they can do or rather not do.  Should the rules be changed to stop all fighting or perhaps we need to turn back time and see how frustration and anger was handeled before all the  new rules came into play.  Players used to use their hands and not their sticks?   Concussions are becoming so common what do you think can or should be done?