August 20, 2014 8:10 pm Chief: ‘May Have to Use Force' on Unarmed People Amid tensions and clashes in Ferguson, Mo., DC Police Chief Cathy Lanier reflects on what Washington learned after a police shooting sparked riots in Northwest DC in 1991. Local 25:59 Protesters topple barriers at GW: The News4 Rundown 1:54 Fairfax County police investigate theft, attempted theft at jewelry store 0:32 Photo shows person riding on back of Metro rail car 2:01 DC police unit serves the deaf community 2:48 Speed camera installed near site of 2022 fatal high school pedestrian crash