Stun Gun on an Occupy Protester

So, When I saw this video I mean I wasn't surprised. I live in Cincinnati the most racist and bull shit of a city so seeing injustices online isn't that overwhelming when I've seen it first hand. But back to the point this is what  I think went on in those cops heads. They're giving eviction notices out and arresting anyone who appears to be staying over night in the parks. Well the guy that was attacked was wearing pajama pants. And in my high school kids came to school all the time in pajama pants, but the cops are basically just abusing their authority by severe profiling. Cops do have the right to arrest someone through profiling, but because of these reasons I believe that the cops on the video were in the wrong. The New York Police Department has these five stages set through which the use of force can progress. 1) verbal persuassion, 2)unarmed physical force, 3) force using non-lethal weapons, 4) force using impact weapons, 5) deadly force (AIUSAPolice Brutality 1999:2). If you guys have anything to add to that please share I am very interested in hearing some opinions on the subjects becasue not all may agree with me.  http://www.drury.edu/ess/irconf/DMangan.html