Jack Todd tweets,

How do you fail to make the call on that play? Scary, terrifying hit the way Lucic threw Mete into the boards. And no call. Sickening.

Wouldn't be surprised to see Lucic get a suspension for that hit. But the referees are the first line of defence. Most of these clowns don't care about fines or suspensions - throw them out of a game and you get their attention.