Some police officers turn their backs outside Wenjian Liu's funeral on Jan. 4, 2015, as Mayor Bill de Blasio's euology is shown on a large video screen. (credit: Christine Sloan/CBS2)
Wenjian Liu Funeral
Pei Xia Chen, widow of NYPD officer Wenjian Liu, is seeing speaking on a large video screen outside Aievoli Funeral Home in Dyker Heights, Brooklyn, on Jan. 4, 2015. (credit: Christine Sloan/CBS2)
Wenjian Liu Funeral
Police plays "Taps" in honor of slain NYPD Officer Wenjian Liu on Jan. 4, 2015, in Brooklyn. (credit: Jessica Schneider/CBS2)
Wenjian Liu Funeral
All officers turn to face forward as Mayor Bill de Blasio finishes speaking and Police Commissioner Bill Bratton walks to the podium at the funeral for Wenjian Liu in Brooklyn on Jan. 4, 2015. (credit: Jessica Schneider/CBS2)
Wenjian Liu Funeral
Helicopters fly over Dyker Heights, Brooklyn, where the funeral for NYPD Officer Wenjian Liu was being held on Jan. 4, 2015. (credit: Jessica Schneider/CBS2)
Wenjian Liu Funeral
Some officers turn their backs as Mayor Bill de Blasio is seeing speaking on a large video screen outside Aievoli Funeral Home in Dyker Heights, Brooklyn, on Jan. 4, 2015. (credit: Christine Sloan/CBS2)
Funeral Held For Second Police Officer Killed In Brooklyn
