Mourners pay respects to fallen NYPD officer

Updated 3:51 PM ET, Sun January 4, 2015
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A hearse carrying the body of Officer Wenjian Liu passes by police officers in formation after his funeral in Brooklyn, New York, on Sunday, January 4. Seth Wenig/AP
Police officers gathered for the funeral salute the fallen officer. Kevin Mazur/Getty Images
The hearse carrying Liu's body drives under a suspended American flag after the funeral. Spencer Platt/Getty Images
NYPD officers carry the casket of slain officer Wenjian Liu. JEWEL SAMAD/AFP/Getty Images
Pei Xia Chen, Liu's widow, cries while holding a picture of her husband. JEWEL SAMAD/AFP/Getty Images
Police officers stand at attention during the funeral. John Minchillo/AP
A painting of Liu is displayed prior to the funeral. Julio Cortez/AP
New York City Mayor Bill de Blasio, center, walks with his wife, Chirlane McCray, while arriving for the funeral. Julio Cortez/AP
Some police officers turn their backs as de Blasio speaks during the funeral. John Minchillo/AP
Onlookers gather at barricades before the funeral begins. John Minchillo/AP
Police officers from across the country arrive at the funeral. John Minchillo/AP