A protester marches down West Florissant Avenue with an upside-down U.S. flag during a peaceful march in Ferguson, Missouri, on Monday.
Demonstrations, mostly peaceful but with spasms of violence by smaller groups, have flared since Michael Brown, 18, was shot dead during an incident with a policeman in a patrol car while walking down a residential street in Ferguson on Aug. 9.
Demonstrators carry roses as they march down West Florissant Avenue in Ferguson on Monday.
Police tackle a man who was walking down a Ferguson street in front of a McDonald's restaurant on Monday. The man appeared to be walking past a group that had been assembled nearby while police were telling everyone to keep walking. Moments after he turned around and told police he was just walking, they took him to the ground.
Police officers detain a demonstrator outside a McDonald's restaurant in Ferguson on Monday.
A man displays a sign during a protest in Ferguson on Monday.
Law enforcement officers watch on during a protest on West Florissant Avenue in Ferguson on Monday night. Police fired tear gas in another night of unrest in a Missouri town where a white police officer shot and killed an unarmed black teenager, just hours after President Barack Obama called for calm.
Police officers arrest a demonstrator in Ferguson on Monday night. At least two people were shot in the violent overnight melee and 31 people were arrested.
Demonstrators stand in the middle of West Florissant Avenue as they react to tear gas fired by police during ongoing protests in reaction to the shooting of Michael Brown.
A man is detained by police during a protest in Ferguson on Monday.
Police attempt to control demonstrators protesting the killing of Michael Brown on Monday in Ferguson. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death.
Members of a rowdy group of demonstrators drag a portable toilet onto the roadway during a protest in Ferguson. Police fired tear gas and stun grenades at protesters on Monday, after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman.
A man tries to recover after being treated for the effects of tear gas.
A police officer raises his weapon at a car speeding in his general direction as a more vocal and confrontational group of demonstrators stands on the sidewalk during protests in Ferguson on Monday night.
Previous Gallery: Ferguson's Streets Become a Battleground as Night Falls