In an overwhelming number of situations, yes. Cops are intended to prioritize property over people and convictions over justice. Those who speak out about injustices face retribution from their peers and little defense from their union. Police unions act as criminal legal defense to eschew responsibility.
There have even been legal cases of departments refusing to hire people because they were “too smart”. This is largely speculated to be due to fear of those who are more intelligent speaking out, and having a moral compass of their own rather than blindly following.