In general it is not the cops that are the problem, but the system that they must follow. That system is designed to make cops enforce the will of the PTB against We The People.

Our entire system of police was created by John D. Rockefeller, Jr. in 1931 (see Wickersham Commission and its predecessor (don't remember the name) funded by the Carnegie Corporation in 1926(ish)). The penal system, the system of the courts, the entire thing was created by Rockefeller to teach cops, and judges, and parole officers to subjugate the people. It was designed to teach them that they are the representatives of the Authority, and the People are servants (slaves) to them (slaves to the Authority, not the representatives, except by proxy).

No matter how noble the police may be, or how much they want to help, the system is designed to subjugate, thus the police are automatically complicit because they have no choice if they want to be a part of the system (keep the "law," which was created by Rockefeller).

It's a level of evil that is difficult to comprehend until you dig into the details.