Our "justice" system is fundamentally corrupt at pretty much every level. We like to pretend we are better than china, or soviet russia but the reality is our cops are just as bad or worse than theirs.
The supreme court gave them the power to stop anyone on the street and feel them up. If you refuse lick their boots they will beat you until and maybe kill you.
Police abuse is one of the many reasons that public sector unions need to be disbanded, as the union always fights against even the smallest measure of accountability.