The idea that playing violent video games as a child leads to mass school shootings is misleading, as no studies have found a direct link between the two. A CNN fact-check highlights how some have wrongly blamed violent video games for school shootings, often citing research that connects gaming to aggressive behavior but not specifically to these tragic events. Gun violence in the United States has gotten worse over recent years, but video games has not been the cause of this.
Source:
https://www.cnn.com/2019/08/05/politics/violent-video-game-shooting-fact-check/index.html