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

FILE -Ahmad Khan Rahimi, the man accused of setting off bombs in New Jersey and New York in September, injuring more than 30 people, is led into court Tuesday, Dec. 20, 2016, in Elizabeth, N.J. 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/Mel Evans, File)