September 16, 2020 11:32 pm Cambridge Police Officer Investigated Over Social Media Posts Department officials are investigating “deeply disturbing” posts allegedly made by a police lieutenant in Cambridge. US & World Videos 3:09 Clash of protests continues at MIT 2:00 Friends of John O'Keefe testify in Karen Read trial 2:40 Cambridge bans right turns on red lights 2:23 Friend of John O'Keefe testifies in Karen Read trial 1:57 Tensions escalate as protests across Mass. colleges continue