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.
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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.