“An officer can be seen at the 5 second time-mark stomping on the man’s prosthetic leg.” — No he didn’t. Later in the video an officer was kneeling on the other leg, OVER the prosthetic. The overreaction by the officers seems fairly obvious, but you don’t need to get melodramatic and exaggerate what happened. Even your video doesn’t show the officer “stomping” on the prosthetic … he was pinning the other foot to the ground. Whether the man should have been arrested or cuffed I don’t know from your video, but he resisted quite strongly which is why it took so many officers.