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Mass Shooting

Gun violence researcher on Trump shooting

According to researchers, mass shooters in the U.S. tend to fit a specific profile. University professors Jillian Peterson and James Densley compiled a database of detailed life histories of 180 U.S. mass shooters to look for early warning signs. Peterson, executive director of the Violence Prevention Project Research Center, joins CBS News to break down her findings in the wake of the assassination attempt on former President Donald Trump.

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