That last video of him grabbing the browns QB's face mask and throwing him is the worst of all. He had no intention of making a clean tackle. Just grabbed his face mask, pulled him in, and threw him by his helmet. Suh is a punk, he reminds me of the type of guys I played with who would do that on the field because he knows retaliation is only going to go so far because it's during a game and everyone is supposed to be a professional...well, everyone but him. Yet if you saw him after the game he wouldn't be anywhere near as belligerent.
I also disagree that this is somehow "tough guy" behavior, or even the stuff that used to go on back in the day. Gouging someone's eye under a pile of people doesn't make you a tough guy, you're just an opportunist.