A city councilor wants to deploy drones to monitor high-crime neighborhoods and provide an extra measure of security at major community events – an idea that raises privacy concerns with the ACLU of Massachusetts. Brian K. Gomes’ proposal, which is not expected to be heard until next month or possibly January, calls for a meeting between the City Council’s Committee on Public Safety and Neighborhoods and Police Chief Joseph C. Cordeiro to discuss the use of drones. “I think it can be a crime fighter, undercover surveillance in neighborhoods across the city where we have problems,” Gomes said. “It’s another tool for the Police Department to fight crime.”