Michael Brown. Walter Scott. Akai Gurley. Eric Garner. Tamir Rice.

Over the past several years, the deaths of black men and boys like these at the hands of police officers have sparked a national debate about race, policing and civil rights, with the Department of Justice stepping in to mandate reform at several troubled police forces.

For more than a year, FRONTLINE has been reporting on the effectiveness of that process. Now, in a new documentary called Policing the Police that comes to PBS on June 28, FRONTLINE takes viewers on a provocative journey inside one police department that’s being forced to change its ways — specifically, the Newark Police Department (NPD) in New Jersey.

The Justice Department’s intervention in Newark wasn’t spurred by the shooting death of an unarmed black man, but by allegations of systemic civil rights violations over the years.

Watch on @pbstv or here starting June 28.

Keep an eye out for our new doc on Tuesday night, with the New Yorker’s Jelani Cobb. Join the conversation on Twitter with the hashtag #PoliceReform.