Protesters take part in a demonstration in Tulsa, Oklahoma, the United States, on June 20, 2020. U.S. President Donald Trump held his first rally in more than three months in Tulsa on Saturday evening, amid COVID-19 concerns and a national reckoning over racism. There were multiple groups of demonstrators with varying viewpoints in the area adjacent to the rally. (Photo by Alan Chin/Xinhua)

Police stand guard during a demonstration in Tulsa, Oklahoma, the United States, on June 20, 2020. U.S. President Donald Trump held his first rally in more than three months in Tulsa on Saturday evening, amid COVID-19 concerns and a national reckoning over racism. There were multiple groups of demonstrators with varying viewpoints in the area adjacent to the rally. (Photo by Alan Chin/Xinhua)

Protesters take part in a demonstration in Tulsa, Oklahoma, the United States, on June 20, 2020. U.S. President Donald Trump held his first rally in more than three months in Tulsa on Saturday evening, amid COVID-19 concerns and a national reckoning over racism. There were multiple groups of demonstrators with varying viewpoints in the area adjacent to the rally. (Photo by Alan Chin/Xinhua)

A protester takes part in a demonstration in Tulsa, Oklahoma, the United States, on June 20, 2020. U.S. President Donald Trump held his first rally in more than three months in Tulsa on Saturday evening, amid COVID-19 concerns and a national reckoning over racism. There were multiple groups of demonstrators with varying viewpoints in the area adjacent to the rally. (Photo by Alan Chin/Xinhua)