PHOTO GALLERY: Killing of black teen sparks clashes in Missouri

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A protester takes shelter from smoke billowing around him Wednesday, Aug. 13, 2014, in Freguson, Mo (Photo: AP)

A device deployed by police goes off in the street as police and protesters clash Wednesday, Aug. 13, 2014, in Ferguson, Mo (Photo: AP)

A man watches as police walk through a cloud of smoke during a clash with protesters Wednesday, Aug. 13, 2014, in Ferguson, Mo (Photo: AP)

Police officers work their way north on West Florissant Avenue in Ferguson, Mo., clearing the road with the use of tear gas and smoke bombs Wednesday, Aug. 13, 2014 (Photo: AP)

Protesters chant during a peaceful demonstration as communities continue to react to the shooting of Michael Brown in Ferguson, Missouri August 15, 2014 (Photo: Reuters)

Savannah McCoy, 17, right, holds up a sign as she and her friend Kimber Camgros, 16, listen to speakers during a vigil for Michael Brown of Ferguson, Mo., in San Francisco, Thursday, Aug. 14, 2014 (Photo: AP)

Dozens gather on the steps of City Hall in Colorado Springs, Colo. chanting "Hands Up, Don't Shoot" during a rally held to show solidarity with Ferguson, Mo. on Thursday, Aug. 14, 2014. On Saturday, Aug. 9, 2014, a white police officer fatally shot Michael Brown, an unarmed black teenager, in the St. Louis suburb (Photo: AP)

About 1000 people march peacefully in New York City’s Union Square, Thursday, Aug. 14, 2014 (Photo: AP)

In this photo provided by Kerri L. Berney, people gather in New York's Times Square, Thursday, Aug. 14, 2014, in New York (Photo: AP)

Protesters march up Broadway during a peaceful demonstration, as communities react to the shooting of Michael Brown in New York August 14, 2014 (Photo: Reuters)

With his hands raised above his head, University of Nebraska criminal justice senior Aron Sanders, of Omaha, Neb., kneels in front of the Nebraska State Capitol building Thursday, Aug. 14, 2014, as he and more than 30 others students gathered for a vigil (Photo: AP)

A large crowd listens during a vigil at Hart Plaza in downtown Detroit on Thursday Aug. 14, 2014. Vigils are being held across the country in the wake of the shooting death of Michael Brown by a police officer in Ferguson, Mo, (Photo: AP)

A crowd raises their arms while chanting "Hands Up, Don't Shoot" during a protest for Michael Brown of Ferguson, Mo., in San Francisco, Thursday, Aug. 14, 2014 (Photo: AP)

Thousands of people peacefully gathered in Manhattan's Times Square and Union Square Thursday, invoking the rallying cries "hands up, don't shoot" and "I can't breathe," alluding to the deaths of Michael Brown in Ferguson, Missouri and Eric Garner, 43, who was arrested on suspicion of selling loose, untaxed cigarettes and was placed in an officer's chokehold in New York.

People gather in New York as part of a "National Moment of Silence for Victims of Police Brutality". The groups say they will assemble at over 90 vigils across the U.S. to share in a moment of silence and solidarity with each other.