Stacking up: Top 10 deadliest mass shootings in modern US history

By Dawn Jorgenson - Web - News Editor
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PARKLAND, Fla. - As the death toll rises following Wednesday's mass shooting at Marjory Stoneman Douglas High School in Parkland, it's now clear that it will be among the top 10 deadliest mass shootings in modern U.S. history.

 

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