A police officer stands guard outside the scene of a mass shooting in Plano, Texas, on Sept. 10, 2017.
A police officer stands guard outside the scene of a mass shooting in Plano, Texas, on Sept. 10, 2017. LM Otero AP
A police officer stands guard outside the scene of a mass shooting in Plano, Texas, on Sept. 10, 2017. LM Otero AP

What do most mass shooters have in common? Hint: It isn’t politics, video games or religion.

September 16, 2017 08:30 PM

UPDATED September 16, 2017 08:30 PM

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