Police in Las Vegas, Nevada say a man opened fire on a country music concert late Sunday, killing at least 50 people and wounding more than 400 others. It is the deadliest mass shooting in U.S. history.
Las Vegas Shooting

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A man lays on top of a woman as others flee the Route 91 Harvest country music festival grounds after a active shooter was reported on October 1, 2017 in Las Vegas, Nevada.

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Police officers advise people to take cover near the scene of the shooting near the Mandalay Bay resort and casino on the Las Vegas Strip, Sunday, Oct. 1, 2017, in Las Vegas.

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A body is covered with a sheet in the intersection of Tropicana Avenue and Las Vegas Boulevard South after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, Oct. 1, 2017.

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A pair of cowboy boots is shown in the street outside the concert venue after a mass shooting at a music festival on the Las Vegas Strip in Las Vegas, Nevada, U.S.