FERGUSON, MO - AUGUST 15: A demonstrator throws a grenade back at police after a brief clash on August 15, 2014 in Ferguson, Missouri. Police sprayed pepper spray, shot smoke, gas and flash grenades at protestors before retreating. Several businesses were looted following the skirmish as police held there position nearby. Violent outbreaks have taken place in Ferguson since the shooting death of Michael Brown by a Ferguson police officer on August 9. (Photo by Scott Olson/Getty Images)
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