It was ugly, nasty and was a hit that has no place in hockey. Even worse, it resulted in Booth spraining his MCL and he'll miss the next 4-6 weeks as a result.
Here is the recap of the decision from discipline chief Brendan Shanahan.
This is the first time Shanahan has issued a suspension for kneeing, but if any was worth it, this was. As Shanahan points out, there were a couple of clear factors for the large suspension. First of all, Porter comes from a good ways with his leg fanned out. Secondly, Booth makes no alterations to his path that would lead to accidental contact or anything.
Booth's injury also played a role.
I'm pleasantly surprised. I was a bit skeptical that Shanahan would issue a suspension for this hit, but obviously he did. It was cheap and a message needed to be sent.