U.S. Secret Service uniformed division officers face demonstrators during a protests against the death in Minneapolis custody of George Floyd, near the White House in Washington, D.C., U.S., June 1, 2020. Moments before a second night of curfew was imposed in Washington, D.C. on Monday, violent clashes erupted outside the White House between U.S. military and park police and protesters demonstrating against police brutality in the wake George Floyd's death last week. REUTERS/Jonathan Ernst

People raise their arms during a protests against the death in Minneapolis custody of George Floyd, near the White House in Washington, D.C., U.S., June 1, 2020. The police used stun grenades, and horses to drive back White House protesters ahead of U.S. President Donald Trump's address to the nation from the Rose Garden. REUTERS/Jonathan Ernst

Law enforcement officers block demonstrators during a protests against the death in Minneapolis custody of George Floyd, near the White House in Washington, D.C., U.S., June 1, 2020. Police fired tear gas and rubber bullets to disperse peaceful demonstrators near the White House on Monday as U.S. President Donald Trump vowed a massive show of force to end violent protests over the death of a black man in police custody. REUTERS/Jonathan Ernst

Demonstrators gather in front of U.S. Secret Service uniformed division officers during a protests against the death in Minneapolis custody of George Floyd, near the White House in Washington, D.C., U.S., June 1, 2020. Moments before a second night of curfew was imposed in Washington, D.C. on Monday, violent clashes erupted outside the White House between U.S. military and park police and protesters demonstrating against police brutality in the wake George Floyd's death last week. REUTERS/Jonathan Ernst

A demonstrator reacts during a rally near the White House against the death in Minneapolis police custody of George Floyd, in Washington, D.C., U.S., June 1, 2020. Moments before a second night of curfew was imposed in Washington, D.C. on Monday, violent clashes erupted outside the White House between U.S. military and park police and protesters demonstrating against police brutality in the wake George Floyd's death last week. REUTERS/Jonathan Ernst

Demonstrators kneel in front of U.S. Secret Service uniformed division officers during a protests against the death in Minneapolis custody of George Floyd, near the White House in Washington, D.C., U.S., June 1, 2020. Police fired tear gas and rubber bullets to disperse peaceful demonstrators near the White House on Monday as U.S. President Donald Trump vowed a massive show of force to end violent protests over the death of a black man in police custody. REUTERS/Jonathan Ernst