Probably the killing part. Though the police might perpetrate illegal deaths, either through neglect while in custody or 'over enthusiasm' during raids, I don't think that its a systemic abuse.

The documented racial profiling, however, is could be properly termed 'abusive'.

There's likely no policy of killing, but there is a policy of covering up inconvenient leaks, arresting photographers, etc, that gets used when there is a killing, or any other crime from drunk-driving to bribery.

The police code of never admitting an officer committed a crime is itself a crime, and one of the worst.