So in other words cops are guilty of being racists (And everything else) until being proven innocent?
Anyone charged with a crime is innocent until proven guilty because we feel as a society it is better to let guilty go free rather than convict innocent...Its why the standard in criminal law is beyond a reasonable doubt. Everyone should be treated equally under the law, regardless of race, religion, sex, sexual orientation and occupation.
This is why the powerless and minorities are heavily impacted. Who writes laws? Who edits laws? It is the powerful people with levels of indirection: lobbyists, politicians. That's why the elite is not impacted, because if they get impacted, they can change the laws.
Immunity came about because if prosecutors were Personably liable for charges where there were no convictions no one would take those positions. Similarly if police were personally liable for arrests where there were no convictions no one would be a cop.
But the same is true to a degree for all government, for example if I were to get hit by a county/city bus, generally the driver won’t be liable and worse my damages against the government are capped (I believe at $200k In FL, unless the government waived the cap and good luck with that).