女子持槍襲擊母校，警員衝進教學樓，3分鐘擊斃槍手！

Video credit:Metropolitan Nashville Police Department, CBS Mornings
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解說美國真實案件，分享美警執法故事，影片僅限學術教育用途，絕非美化暴力犯罪，請不要模仿其中的任何違法行為！


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