A look at acts of public violence in NYC over past 40 years

FILE - Colin Ferguson, center, who was been charged in the Long Island Rail Road commuter train shooting rampage, is led into a courtroom by officers at for a procedural hearing at the Nassau County Court House, Friday, Dec. 17, 1993, Uniondale, N.Y. The shooting this week of 10 people by a man who deployed smoke grenades and fired at least 33 shots in a commuter-packed Brooklyn subway car was hardly the first time New Yorkers have grappled with an act of violence. (AP Photo/Mike Albans, File)