Photo taken on Sept. 29, 2016 shows an Australian national flag at half-mast to commemorate the National Police Remembrance Day in Sydney, Australia. (Xinhua/Zhu Hongye)
Photo taken on Sept. 29, 2016 shows an Australian national flag at half-mast to commemorate the National Police Remembrance Day in Sydney, Australia. (Xinhua/Zhu Hongye)