Um, you don't get it. Rangel isn't talking about black on black crime or being afraid of black men on the street. Precisely the opposite. He's talking about an incident that just happened in Harlem where a black off-duty NYPD officer was shot by another NYPD officer (white). Rangel is making the inference that no black man, even the President, is safe from the cops on the streets of Harlem.
oh...ok.
thanks for the clarification.