NEW : Ex-Mayor Eric Holder blasts comments from former Gov . Rudy Giuliani . Pataki blames Mayor George Pataki , Obama Rudy Giuliani for `` anti-cop rhetoric '' supporting protests . George Pataki and police union officials quickly lashed out at New York Mayor Bill de Blasio . Officials , public outraged over the killings . Police officers turn their backs on the mayor at a news conference .
NEW : Ex-Mayor Eric Holder blasts comments from former Gov . Rudy Giuliani . Pataki blames Mayor George Pataki , Obama Rudy Giuliani for `` anti-cop rhetoric '' supporting protests . Officials , public outraged over the killings . Police officers turn their backs on the mayor at a news conference .