I really do believe the NHL has erred in not issuing a minor cosmetic suspension to Chara.
For an organization presenting an entertainment product to the public, that looks bad.
However, it would seem to me that by absolving Chara, someone - at least Mike Murphy - takes at least a partial view the way I do: that the injured player shares responsibility for placing himself in a dangerous position. But the NHL has left that unsaid.
If they're going to think it, perhaps they should say it, and see what message that sends to the players.