Police released pictures Sunday of a man who angrily stabbed a subway rider with a knife after the pair bumped into each other at an East Village subway station.

Crowds of protesters mobbed a subway station in Manhattan Wednesday night in response to a police-involved shooting at a Brooklyn subway station on Sunday. Demonstrators jumped the turnstiles at the West 4th Street station and chanted obscenities at responding NYPD officers,

Police have released surveillance video of the suspect wanted for stabbing a man in the back at a Manhattan subway station. The attack happened around 8:45 p.m. on Friday at the L train station at East 14th Street and First Avenue.

A subway rider was stabbed in the back by an apparent stranger Friday night as he stepped off a train at a Manhattan station. The 29-year-old victim had just stepped off a Brooklyn-bound L train at the First Ave.