November 7, 2016 4:55 pm Day 4 of Gary Lee Sampson Retrial Monday, more than half a dozen people who had close encounters with killer Gary Lee Sampson testified in his sentencing retrial. US & World Videos 3:05 100 protesters detained at Northeastern University 2:39 Community mourns police sergeant killed on duty 4:32 Anti-war protester at Northeastern speaks amid arrests: ‘We are peaceful students' 5:39 Billerica police sergeant hit and killed by excavator during construction detail 2:30 Arrests made in string of home break-ins targeting Asian-Americans