And when was this? There is little desire in most districts to prosecute cops. The cops and the judicial side work together, hand in hand, there are very few places and very few cop "crimes" that are prosecuted.Lack of prosecution of officers behaving badly is a failure of leadership in the department.
If the department recommended charges, and the DA failed to prosecute, the public can vote the DA out, if they have the wherewithall to REMEMBER the DA failures. Assistant DA's can be terminated and prosecuted for misconduct and disbarred.