I think that’s possibly one of the best ways to begin addressing the issue as a culture, the reminder that their badge is literally a “shield” rather than a “sword”. And I will say that while I know cops that fit the negative stereotypes, I also know cops that portray a positive image. The issue isn’t with individual officers, it’s with a system that itself is racist and built upon exerting authority. Unfortunately that’s the real reason why you could never honestly vet for racism or even someone that’s likely to become a bully with a badge, if the system takes good people and bends them in that direction then these incidents will continue to happen, even with otherwise good officers that have been brainwashed into a certain mentality by their workplace environment.
And the best way to handle that is by changing the mindset of law enforcement entirely, perhaps starting with changing the idea from enforcement to civil protection.