Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of Brown, in Ferguson
REFILE - CORRECTING LOCATION Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of teenager Michael Brown, in Ferguson, Missouri, August 18, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW TPX IMAGES OF THE DAY)
Demonstrators stand in the middle of West Florissant holding a street sign, with their hands up, towards the police during ongoing protests in reaction to the shooting of teenager Michael Brown in Ferguson
Demonstrators stand in the middle of West Florissant holding a street sign, with their hands up, towards the police during ongoing protests in reaction to the shooting of teenager Michael Brown in Ferguson, Missouri, August 18, 2014. Police fired tear gas and stun grenades at protesters in Ferguson after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW)
Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of Brown, near Ferguson
Demonstrators stand in the middle of West Florissant as they react to tear gas fired by police during ongoing protests in reaction to the shooting of teenager Michael Brown, near Ferguson, Missouri, August 18, 2014. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW TPX IMAGES OF THE DAY)
A cow nuzzles its calf in a field near the village of Lukyanovka
A cow nuzzles its calf in a field near the village of Lukyanovka in Russia's Siberian Khakassia region August 17, 2014. On August 7, Russia banned all meat, fish, dairy, fruit and vegetable imports from the United States, the European Union, Norway, Canada, and Australia for one year to retaliate against Western sanctions on Moscow over the Ukraine crisis. Russia will allow imports from neighbouring Belarus and Kazakhstan of food processed from Western raw materials as Moscow seeks to damp down domestic food price rises triggered by its ban on food imports from the West. Picture taken August 17, 2014. REUTERS/Ilya Naymushin (RUSSIA - Tags: AGRICULTURE POLITICS CIVIL UNREST ANIMALS)
Cows graze in a field near the village of Lukyanovka in Russia's Siberian Khakassia region
Cows graze in a field near the village of Lukyanovka in Russia's Siberian Khakassia region August 17, 2014. On August 7, Russia banned all meat, fish, dairy, fruit and vegetable imports from the United States, the European Union, Norway, Canada, and Australia for one year to retaliate against Western sanctions on Moscow over the Ukraine crisis. Russia will allow imports from neighbouring Belarus and Kazakhstan of food processed from Western raw materials as Moscow seeks to damp down domestic food price rises triggered by its ban on food imports from the West. Picture taken August 17, 2014. REUTERS/Ilya Naymushin (RUSSIA - Tags: AGRICULTURE POLITICS CIVIL UNREST)
Demonstrators listen to Nelly during a peaceful march in reaction to the shooting of Brown, near Ferguson
Demonstrators listen to rapper Nelly during a peaceful march in reaction to the shooting of Michael Brown, near Ferguson, Missouri, August 18, 2014. REUTERS/Lucas Jackson (UNITED STATES)
Members of a rowdy group of demonstrators drag a portable toilet onto the roadway during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri
Members of a rowdy group of demonstrators drag a portable toilet onto the roadway during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters in Ferguson, Missouri on Monday, after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW SOCIETY)
A protester dons a gas mask on West Florissant during protests in reaction to the shooting of Michael Brown near Ferguson
A protester dons a gas mask on West Florissant during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters in Ferguson, Missouri on Monday, after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW SOCIETY)
Members of a rowdy group of demonstrators stand with their hands up as they are lit by a police spotlight on West Florissant during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri
Members of a rowdy group of demonstrators stand with their hands up as they are lit by a police spotlight on West Florissant during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters in Ferguson, Missouri on Monday, after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW SOCIETY)
Police officers stand on top of an armored truck to monitor the movements of a rowdy group of demonstrators during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri
Police officers stand on top of an armored truck to monitor the movements of a rowdy group of demonstrators during protests in reaction to the shooting of Michael Brown near Ferguson, Missouri August 18, 2014. Police fired tear gas and stun grenades at protesters in Ferguson, Missouri on Monday, after days of unrest sparked by the fatal shooting of an unarmed black teenager by a white policeman. REUTERS/Lucas Jackson (UNITED STATES - Tags: CIVIL UNREST CRIME LAW SOCIETY)