I agree with Bison and y. This has always been the culture of policing throughout history. Truth be told, it's likely better now than what it use to be. They teach this type of behavior in training, but there is a big different in how they apply the training and it often is related to race, gender, social standing and income. This is why I advocate hiring better people. An educated, aware person should have the ability to move past their preconceived opinions, and judge a situation with as little bias as possible.
The first order should be not to escalate a situation. The robot cop mentality of the past is over. Back then folk did not know better and accepted that behavior. Smart phone has given the public a glimpse of the turth and people are not tolerating that any longer, unless of course you are y and his followers. In their eyes, law enforcement can not do any wrong. They believe you are not suppose to question a cops, and follow their orders.