Boston December 10, 2020 5:13 pm Mayor Walsh Warns Against Holiday Parties Amid a rise in coronavirus cases in Boston, Mayor Marty Walsh is warning residents not to hold holiday parties. 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