Crowder's mission was obviously to be as physical as possible with Lebron and to try to rattle him, so I'm not surprised that Cleveland in turn tried to goon him-- he took a lot of extracurricular stuff besides these two attacks. Good for him for not getting shaken.
I don't think Perkins gets a suspension on that. It was egregious, obviously intentional, and unsportsmanlike, but not dangerous. It's a joke that Crowder also got T'd for being on the receiving end. Perkins is also a joke, because the only reason he came into the game was to do this hockey stuff.
The spinning punch, though, was amazing. I haven't seen anything like that since MWP's elbow on James Harden. MWP got 7 games for that- I think that Smith ought to be in line for a similar punishment.