The video clearly shows Mike's attitude and it can clearly show why he would turn and attack the officer. In the video he 1st shoved the clerk into a store display and began walking out. When the clerk apparently said something he turned back in to attack the clerk again. The clerk backed away so he turned back and went outside the store. When the officer first confronted him Mike assaulted the officer. Mike them started walking away but when the officer got out of the car and told him to freeze could there be any doubt that he would attack the officer again just like he did the clerk in the store.
That's not what I saw in the video. I saw the little old guy get up in the big young guy's face. Then the big guy "barely" touched the shoulder of the little guy. In the video you can see the little guy taking a step back an "brushing" up against the loose rack. This happens when you take a step back into light weight racks. They don't support you and you don't have a place to put your feet so you stumble. Then the big guy lets the little guy off and starts walking out. The little guy looks like he's saying something and the bid guy turns around, "flexes" and takes one step toward the little guy.
What is clear to me from your reaction to this video is that you need to grow a pair.