I think a very core issue is that modern police forces are all based on acting as instraments of state power who maintain the monopoly on violance first and foremost. ANything else that they do or say they do is incedental or in addition to that. Protecting the public from crime originally ment protecting the capitalists and nobles from the developing working class and urban unemployed before it was broadened over time, as a PR measure as much as anything.
The police as they exist need to be abolished and should be replaced with a bottom up rather then top down infestructure. We (not just the USA) need to make their first duty actually be protecting those who can't protect themselves rather then maintaining the monopoly on violance and capitalist private propety.
tldr: while the police are an instrument of the elite they will never by able to be good public servants.If a beat cop is facing down lethal force from criminals then the entire society already has systemic inequalities bad enough to lead to this kind of clash eventually anyway whether it is with the police, the army or the government.
I agree.Personally, I think that the goal needs to be community policing- probably along the lines of Peelian principles, but perhaps with some alterations made.
I'm not sure that this can be done with the 'police force' as it exists, so we'd need to abolish the police either way. The question is whether we create new formal systems of policing afterwards, or if we reject formal systems- which will lead, naturally, to informal systems arising.