February 20, 2020 5:37 am Boston's Police Commissioner's Office Pays Homage to the City's Black Community Police commissioner William Gross has an office that’s filled with artifacts and collectibles that teach about black history. US & World Videos 2:04 Newton dentist office aiming to keep kids comfortable 2:08 Tension grows over campus protests in Boston 1:53 Opening statements begin in the Karen Read trial 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil 2:39 MIT president calls for shutdown of student encampments