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California police fatally shot 13-year-old Andy Lopez, because they mistook a BB gun for an assault rifle. In 2011, the National Rifle Association and gun manufacturers blocked the bill that could have prevented the tragedy.
New York City police officers subdued an emotionally disturbed man who was "acting erratically and dodging cars on a busy Manhattan street" -- but not before police bullets struck an innocent woman in the knee and grazed another woman's buttocks.