I watched this entire game and saw this play. In NO WAY did he kick the helmet or the head of Alfred Morris. It is because it was Ndamukong Suh doing this is why a big stink was made. If this was anyone else, trust me, not a word would have been said.
Guess that is what happens when you are one of the best defensive players in the league. Sorry, Ndamukong Suh that every time you tackle someone, it will be scrutinized. Keep doing what you are doing, Dolphin fans have your back.