Protests renewed in several cities in the United States after a night of unrest and looting, while the Pentagon transferred about 1,600 members of the military to the Washington area, amid pressure from President Donald Trump for a military solution.
This comes as Democrats presented a draft resolution aimed at condemning President Trump for ordering the use of rubber bullets and tear gas.
Protests continued in Washington, DC, in front of the White House despite the entry into force of the curfew, starting at 7 pm local time.
Al-Jazeera correspondent said that the security forces threw tear gas canisters at protesters who tried to remove the iron fence in front of the White House.
Hundreds of people gathered in front of an iron fence surrounding the Lafayette Park, where National Guard personnel stood between the protesters and the White House, and the protesters raised slogans denouncing President Trump and demanding justice and an end to police violence.
Al-Jazeera correspondent in Washington, Fadi Mansour, said that despite the entry into force of the curfew, the protesters are still on the streets, defying the American president and his threat to use military force to control the security situation.
And that hundreds of National Guard personnel are standing to protect the White House from any attempt to storm it.
Additional reinforcements
For his part, Justice Minister William Barr said that additional reinforcements would be sent to Washington, DC, and stressed that it was the government's mission to protect people and their rights, promising to achieve this in the capital.
In a related context, the US Department of Defense indicated that it had moved about 1,600 military forces to the Washington, DC area, after violent protests in the city overnight for days.
Pentagon spokesman Jonathan Rath Hoffman said in a statement that the forces were "on high alert" but "were not involved in the defense support of civilian authority operations".
In Atlanta, Georgia, the curfew came into effect, and despite its entry into force, protesters gathered in the city streets to condemn the killing of George Floyd, for the fifth consecutive day.
The protesters chanted, "Don't shoot," and "I can't breathe." Law enforcement forces used tear gas to disperse the protesters as night fell, and security forces arrested a number of protesters.
Six police officers were also charged for using violence during the arrest of two protesters on Saturday evening.
The first spark of these events caught from Minneapolis, Minnesota, on May 25, after a video clip circulating on social networks showed the death of 46-year-old black American George Floyd who died of suffocation during his arrest by a white policeman.
For about nine minutes, policeman Derek Schofin pressed his knee on Floyd's neck, which was chanting "I can't breathe," while a passing state of anxiety saw the incident.
In a related context, a car called a group of demonstrators in Portland, Oregon, in the northwest of the United States after the police threw tear gas at the protesters, while no additional details have yet been received.
Developments and responses
In New York, local media reported that at least five people - including two police officers - were wounded in a shooting in the Brooklyn neighborhood.
Responding to what happened in New York, Trump said that American forces should take to the streets of New York City.
Trump has threatened to use the military to combat the violence, which often erupted at night after a day of peaceful protests joined by various Americans.
Trump mocked local government officials - including state governors - for their way of dealing with the unrest, saying on Twitter, "Oh, New York, summon the National Guard, the unfortunate and the losers are destroying you, act quickly."
Ann New York Governor Drew Como expressed his anger at the turmoil in New York City, the largest US city.
He said that the city police failed to protect businesses and the public from looting and other aspects of criminal activity last night, adding that the mayor of the city refused to receive the assistance of the National Guard.
The curfews in more than 40 cities and security deployments come at levels not seen in the United States since the riots that followed the assassination of Martin Luther King in 1968, and the National Guard was then deployed in 23 states and Washington, DC.
Draft resolution
Parallel to these developments, US Senate Democrats unveiled a draft resolution condemning President Trump for issuing orders to use tear gas and rubber bullets to disperse protesters off the White House on Monday.
For her part, a member of the US House of Representatives said in an exclusive interview with Al-Jazeera Mubasher channel that she is working with other members to prepare a draft law that deals with the nature of the work of the security forces and the police and allows the strengthening of the procedures of their investigation.