NYC straphanger stabbed by brass knuckle-wielding stranger during morning commute

A hotheaded stranger wielding brass knuckles stabbed a Manhattan straphanger on his way to work during the Thursday morning rush, cops and sources said. The 30-year-old victim was riding a downtown No. 2 train passing through the 96th Street station on the Upper West Side around 7:40 a.m. when the creep tried to pick a...