Barricaded students record sound of encroaching gunfire

At least three injured at a St. Louis school

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Aggressive Teenagers Threaten Ohio Police During Gun Bust Arrest

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Student describes being in St. Louis school during shooting

Dramatic video shows gunfire in crowded downtown St. Louis

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2 killed in shooting at St. Louis high school; gunman also killed

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Caught on Camera: Gunfire rings out at gas station, strikes East St. Louis city hall