What do we know about mass shooters?

Sherie Gramlich reacts during a vigil for victims of a mass shooting
Sherie Gramlich reacts during a vigil for victims of a mass shooting that occurred earlier in the day at a shopping complex Saturday in El Paso, Texas.
John Locher | AP file

Thirty one people died in back-to-back mass shootings over the weekend. Sunday’s shooting in Dayton, Ohio was the 22nd of the year, according to the AP.

Related: Minnesota elected officials respond to mass shootings in Texas, Ohio

MPR News host Angela Davis spoke with Jillian Peterson about the motivations behind these shootings and potential steps towards prevention. Peterson is a psychologist and professor of criminology and criminal justice at Hamline University. Peterson has studied the life history of mass shooters in the United States.

She and her colleague at the Violence Project wrote an op-ed in the Los Angeles Times about what they’ve learned — and how to prevent more attacks.

Use the audio player above to listen to the segment.

At the time of the show the reported death toll was 30. The web copy reflects the updated number, the audio does not.

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