BEIJING, May 30 (Xinhua) -- The police killing of George Floyd, an unarmed 46-year-old black man, in the city of Minneapolis, Minnesota on Monday evening has sparked waves of outrage across the United States.

For the fourth straight night following the death of Floyd at the hands of a white police officer while in custody, thousands of demonstrators have poured into streets in multiple U.S. cities to denounce police brutality and racial discrimination.

The latest instance of police violence has once again brought the public attention to the racial divide which has kept tearing the U.S. society apart. (Xinhua/Wang Ying, Michael Nagle, Angus Alexander, Marcus DiPaola, Bao Dandan, Gu Xingnan, Yin Bogu, Jim Vondruska, Dane Iwata).