Protesters jumped the subway turnstiles in Union Square to bring attention to what they say was a reckless reaction by the NYPD for shooting a man over doing the same thing.

There are new details on Sunday's police shooting on a Brooklyn subway platform that injured four people, including an NYPD officer and two civilians. CBS News New York learned on Monday a bystander took a knife that was at the scene that police said the suspect was wielding at the time he was shot by officers.

The Brooklyn man who allegedly charged at police officers with a knife on Sunday had already had one interaction with police for reportedly dodging the MTA fare, the NYPD said. NYPD Interim Police Commissioner Thomas G.