A protester sits in front of the Lincoln Memorial during a protest over the death of George Floyd in Washington D.C., the United States, on June 1, 2020. (Xinhua/Liu Jie)

A protester sits in front of the Lincoln Memorial during a protest over the death of George Floyd in Washington D.C., the United States, on June 1, 2020. (Xinhua/Liu Jie)

A woman sings in front of the White House during a protest over the death of George Floyd in Washington D.C., the United States, on June 1, 2020. (Xinhua/Liu Jie)

Protesters rally in front of the White House during a protest over the death of George Floyd in Washington D.C., the United States, on June 1, 2020. (Xinhua/Liu Jie)