Here's my view on the whole situation:
Suh slamming the guy's head into the ground and then accidentally (you can tell very clearly from the video that it was an accident) "stomping" on his arm was a dirty action. No doubt about that. BUT, the Packers player did not get hurt. That's what makes this different in my book from, say, James Harrison body slamming Mohamed Massaquoi into the ground and injuring him. Harrison got a big fine for that, but no suspension. Yesterday, on SportsNation, Beadle said that only two players have ever been suspended for their actions on the field: Albert Haynesworth and some guy from the Stone Ages. If that's true, suspending Suh for something like this is an awful big double standard on the part of the NFL.
So I ask again: if Dietrich-Smith would have been injured, than should Suh be suspended? It's such a dumb premise that because he didn't hurt the guy, he so obviously had no malicious intent.
If he had been injured, then, yes, Suh should be suspended.
I'm not saying that head slamming wasn't malicious, because it obviously was, but the fact is that Dietrich-Smith wasn't hurt. The problem I have with the whole situation is that players like James Harrison, Tommie Harris, Hines Ward, Haloti Ngata, Shaun Phillips, Shawn Merriman, and Brandon Merriweather have all done much worse things on the field (things that have actually caused some serious injuries), yet all they got were fines. No suspension, just fines. What Suh did to Dietrich-Smith doesn't even compare to Haloti Ngata punching Ben Roethlisberger in the face and breaking his nose or James Harrison body slamming Mohamed Massaquoi into the ground, yet Suh gets suspended. Complete BS.