Goon slashes straphanger’s ear for “staring” at him disrespectfully on Manhattan subway train: cops

A crazed subway rider slashed another straphanger across the ear for allegedly staring at him as they rode on a Manhattan subway train, cops said. A 23-year-old victim whose identity was not released by police, was riding an uptown 2 train at 12:30 a.m. when he was confronted by another straphanger in Harlem. The perp,…