The police are taking heat across the nation for abusing minorities. They do not want to police a city with such low expectations from the citizens. Chauvin being found guilty would make things a bit better. If they stop the abuse, they get can gain respect back that their own actions wasted. People do not want to fear the police will abuse them.
The problem with that is, when it gets to the point where the police have to be all nice and polite and reluctant to use force, people will stop fearing what might happen if they defy them. The public will lose all respect for police authority and ability to maintain order.
That is already happening.
Eventually it will get to the point where people just ignore their commands, especially in crowd control situations.
This creates a conundrum.
Do we want law and order or do we want toothless police departments?
We cannot have both.
Law enforcement is a rough business and criminals tend to be rough people.
Occasionally, mistakes will be made by the people whose job it is to deal with the dregs and assholes of society every day. We have to expect that.
After awhile, it must get difficult to differentiate.
The unfortunate reality that our own human nature creates for us, is that fear begets respect.
If the populace does not have a certain amount of fear for authority they will not respect it and will not obey it.
Disagree all you want, but AFAIC, it is the truth.