Prosecutors in Illinois are refusing to bring criminal charges against a Chicago police officer who fatally shot an unarmed African-American man in June 2011. Flint Farmer’s death was the third shooting in six months and the second fatality by Officer Gildardo Sierra. Sierra admitted having “multiple” beers before work that night. Video from a dashboard camera appears to show Officer Gildardo standing over Farmer and shooting him in the back. He fired 16 shots; seven hit Farmer. But prosecutors say he reasonably mistook Farmer’s cellphone for a gun.