Good for you for being morally superior. Hope that works out for you...This is not going to be popular here... but that is part of the job that law enforcement signed up for. I'm thankful that there are men and women who are willing to take the hate that is directed at them and still act professionally. Those that cannot need to find another profession and not be judge, jury, and executioner. Find another line of work if you cannot control your emotions.
It doesn't matter what that guy did before, and if they thought he was a deadly threat, they should have pulled out their guns and shot him. They instead threw him a beating. I hope they pay the appropriate price for that. I suspect we will see them crying like little babies when they are sentenced.