Cop are trained, however they need to trained to use some common sense as well. Do you think the cops should act the same way as they did with the Indian man in the news in the following cases:
12 year old, 22 year old, 32 year old, 52 year old, 72 year old, 92 year?

Based on experience and training they should understand when to use excessive force and when not. You cannot just day that they were trained that way.