WASHINGTON -- Protests against police brutality and systemic racism were underway once again in the United States on Tuesday, setting the stage for potential fresh clashes a week after nationwide rallies ignited in the wake of George Floyd's killing in Minneapolis.
Demonstrators marched through the streets of cities including Washington, New York and Los Angeles.
In the nation's capital, hundreds of protesters outside the White House defied a 7 p.m. curfew, chanting "this is what democracy looks like" and "we're not moving."
The peaceful crowd, which was far larger than the evening before, was gathered in front of a newly erected fence that prevented them from entering a park, which federal forces cleared using tear gas on Monday to allow President Donald Trump to have a photo op in front of a church.
The federal government appeared set to crack down harder on the latest wave of protests in Washington.
"There will be even greater law enforcement resources and support in the region tonight," Attorney General William Barr said Tuesday.
Mostly peaceful demonstrations in previous days have descended into rioting and looting at night in some cities, causing destruction to property and hurting businesses.
Four police officers in St Louis were injured by gun shots, as was an officer in Las Vegas during encounters with protesters overnight. The exact circumstances remained unclear.
Protesters have also been injured and thousands arrested in cities across the country.
Trump has called on governors to "dominate" the protests and threatened to deploy the U.S. military to end the unrest, while insisting he supports peaceful demonstrations.