Federal investigators excoriated the department and city officials alike for what they called "systemic deficiencies." They said their inquiry found that the Chicago police force did not provide officers with proper guidance for using force, did not properly investigate improper uses of force, and did not hold officers accountable for such incidents.
"The systems and policies that fail ordinary citizens also fail the vast majority of Chicago Police Department officers, who risk their lives every day to serve and protect the people of Chicago," Attorney General Loretta Lynch said at a news conference.
This sounds like many police departments.
On the other hand, here's Philadelphia's PD, now headed in the right direction after federal intervention. They couldn't do it by themselves. Most problem agencies can't. Ameond the reasons are the culture within the department and strong police unions which protect even the bad cops.
Philadelphia Police Department has made a "substantial effort" to implement reforms in its use of deadly force and is an example for the country amid the current climate of community and police tensions, federal officials said Friday.
However, it will take constant effort and monitoring to keep the agency from falling back to its former self. The culture dies hard, unions will still protect even bad cops and public and politicians will lose interest. Look at he long term history of NYPD--scandal, commission investigation, reforms then a few years later, another scandal. The cycle goes on and on.