AdvertisementHow Recommendations Of An Obama Task Force Have, And Haven't, Changed U.S. Policing08:15Download AudioResumeJune 22, 2020Becky SullivanfacebookEmailLaurie Robinson, left, professor of criminology at George Mason University, and Charles Ramsey, right, Philadelphia police commissioner, listen while President Obama discusses law enforcement recommendations from his Task Force on 21st Century Policing in March 2015. (AFP via Getty Images)