A violent ex-con who had been wanted by the FBI for two cowardly Big Apple murders had a bizarre message for New Yorkers after getting nabbed by the NYPD on Saturday. The parolee, 31, had been the subject of a manhunt by the feds and NYPD for fatally shooting a married dad of two and wings-restaurant worker in Brooklyn on Aug. 23, then pumping a deadly bullet into a customer at a Bronx deli, cops said.