As the service becomes more professional and diverse, the less it can be influenced by boys' clubs.
A new breed of officers hold different views on what it means to be in the police.
It is often assumed that police are at higher risk of suicide than other members of the community because of the stress involved in their jobs. But the picture is more complicated than that.
The Baltimore Police Department is found to have violated the civil rights of poor blacks. A historian explains why those findings are eerily similar to how the city treated blacks in the 1800s.
With citizens filming police, and police recording public encounters, the key to the truth is establishing a clear timeline of events.
While the unacceptably high rate of police murders in South Africa attracts much media coverage, the bigger problem of suicide among police receives little focus.