When the entire force quit (their duties, not quitting taking a salary) over their coworkers being charged for pushing a elderly man onto the pavement and walking away as he bleeds out of his ears unconscious, then it's 59/59 cops who aren't heroes.

When reporting police misconduct internally is met with being charged with filing a false report and being kicked off the force, or being committed to an institution until you can talk to someone you trust who can leak a recording to the press, yes it is the vast majority police upholding this system that are not heroes.

When in my city, the only cop to be reprimanded was the one stupid enough to instagram post "let's start a riot", but not the others attacking press and attacking peaceful bystanders, sending the institutional message that brutality is OK but you have to keep your mask on wrt to social media, yes the represent a system of institutional oppression.