Protesters rally near the White House during a protest over the death of George Floyd in Washington D.C., the United States, on May 30, 2020. Demonstrations and riots have spread to cities across the United States after a video went viral of George Floyd being suffocated to death by a white police officer in the midwest U.S. state of Minnesota on May 25. (Photos: Xinhua)

A protester confronts police near the White House during a protest over the death of George Floyd in Washington D.C., the United States, on May 30, 2020. Demonstrations and riots have spread to cities across the United States after a video went viral of George Floyd being suffocated to death by a white police officer in the midwest U.S. state of Minnesota on May 25.

A protester confronts police near the White House during a protest over the death of George Floyd in Washington D.C., the United States, on May 30, 2020. Demonstrations and riots have spread to cities across the United States after a video went viral of George Floyd being suffocated to death by a white police officer in the midwest U.S. state of Minnesota on May 25.

A protester confronts police near the White House during a protest over the death of George Floyd in Washington D.C., the United States, on May 30, 2020. Demonstrations and riots have spread to cities across the United States after a video went viral of George Floyd being suffocated to death by a white police officer in the midwest U.S. state of Minnesota on May 25.

Protesters rally near the White House during a protest over the death of George Floyd in Washington D.C., the United States, on May 30, 2020. Demonstrations and riots have spread to cities across the United States after a video went viral of George Floyd being suffocated to death by a white police officer in the midwest U.S. state of Minnesota on May 25.