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

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)