I don't think it's any good holding people accountable after they commit atrocities. What matters is to ensure the atrocities aren't committed in the first place. Unfortunately, this would require every current police officer to be dismissed and entirely more suitable people recruited. Post-recruitment, their training would need to be along Scandinavian lines rather than the pathetically inadequate present-day curriculum. As none of this will happen, we can be sure that police malfeasance will continue unabated in the decades to come.