Profiling: Why are the consequences for officer misconduct so low?

RefRef

To be clear, the officers had no basis for their actions, regardless the race of the target-Plaintiff, Terrill Johnson of Denver, Colorado.

The question becomes: Why are officers so willing to engage in this abuse of power; although they are later "settling" [indicating they know they did wrong, despite the "no statement" on wrongdoing], it is ridiculous that people have to be subjected to this kind of treatment.

What new, meaningful consequences are there to ensure that officers do not lie, make up bogus charges, and abuse the citizenry?

I'm not clear that the existing system of "oversight and sanctions" per POST is working.