Looks like Williams walked up to Sherman and was waiting, with his helmet on like a #####, to start to some #### with him. Doesn't look at all like Sherman started things in this post-game meeting.

True...he was waiting...of course with his helmet on...he's not stupid.
Sherman then ran his mouth...then asked for it after he told him what he was gonna do...
Sure its on Williams...but to even claim it was all just on him or Sherman did not do a thing to warrant anyone coming after him is pretty lame too.
Williams walks up and is waiting for Sherman, then Williams says something to Sherman first. It isn't very audible but something about ..."the way you talk to me" and then Sherman says "whatchu gonna do about it". Obviously a carry over from the game. Sherman wasn't being antagonistic to anybody at all in the post game. Williams clearly is coming after Sherman to start something with him. It was all "just on him" for not leaving it on the field. Williams walked up there looking for a fight, as evidenced by him saying he was going to punch Sherman. Whatever happens on the field, stays on the field. If his only defense from Sherman's words are to punch a guy half his size after the game when no one is expecting any physical contact, then he probably doesn't belong in the game.

Of course he's stupid. He deliberately walked up to a player after the game and punched him in the face. He'll be looking at a very stiff fine and possibly a suspension, since that would get him thrown out of a game if it had happened on the field during the game. That's the definition of stupid.