Last month, President Obama traveled to Chicago to deliver a speech before the International Association of Chiefs of Police (IACP). His aim was to sell the 122-year-old professional association of police officers on a package of criminal justice reforms — one of the main planks of which was a return to community policing, a kinder version of law enforcement premised on collaborative partnerships between police and the public.

In a moment transformed by the Black Lives Matter movement, community policing has become one of the go-to solutions to the crisis of police legitimacy.

As for Obama, it wasn’t the first time he’d touted the reform. In May, he went to Camden, NJ — a beleaguered city that has used community policing to drive down its sky-high crime rate — to announce his presidential task force’s nationwide recommendations: more oversight, training, and community policing, all facilitated by new technology and expanded use of social media. That same month, Attorney General Loretta Lynch launched a national community policing tour to highlight model programs and promote a $163 million grant program to implement the task force’s suggestions.