gun laws gun laws

In 2010, Omar Thornton killed eight colleagues in Manchester, Conn., before killing himself. Private employers used to create their own rules about guns on their property. But over the past five years, many states have adopted laws that allow employees to keep firearms in their vehicles at work. Douglas Healey/Getty Images hide caption

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Douglas Healey/Getty Images

Do Guns On The Premises Make Workplaces Safer?

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Firearms for sale at a gun show in Annapolis, Md., on April 14. Andrew Harnik /The Washington Times /Landov hide caption

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Andrew Harnik /The Washington Times /Landov

This AR-15 style weapon was on display in March at the 7th annual Border Security Expo in Phoenix, Ariz. It's among the type of weapons that advocates of new gun laws want to see banned. Joshua Lott /Reuters /Landov hide caption

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Joshua Lott /Reuters /Landov

A Bushmaster rifle, similar to the type used by Adam Lanza during the shooting at Sandy Hook Elementary School, and some ammunition magazines. The sale and possession of this type of weapon, and high-capacity magazines, will be severely restricted in Connecticut under new legislation. Michelle McLoughlin /Reuters /Landov hide caption

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Michelle McLoughlin /Reuters /Landov

After training, teachers and other staffers in South Dakota could choose to bring guns with them to school if their districts want to set up "sentinel" programs. Jim Urquhart /Reuters /Landov hide caption

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Jim Urquhart /Reuters /Landov

Former Rep. Gabby Giffords, D-Ariz., and her husband Mark Kelly at Wednesday's Senate hearing about gun violence. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images