https://www.cbsnews.com/news/80-percent-of-mass-shooters-showed-no-interest-in-video-games-researcher-says/

President Trump met with video game industry representatives Thursday, after saying last month violent video games may play a role in mass shootings. The president met with parents like Melissa Henson.

"The kind of messages and images that they are putting in their minds, I think they're nightly dress rehearsals for huge acts of violence," she said.

But psychologist Patrick Markey's research shows 80 percent of mass shooters did not show an interest in violent video games.