What Are the Known Similarities in School Shooters?

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Clinical psychologist Dr. Judy Ho shares some commonalities that all school shooters have had like feeling disenfranchised and wanting to leave a mark. She also shares that there is often a trigger as well, like maybe a breakup, a parents divorce, or being bullied at school. Clinical psychologist Dr. Lisa Strohman shares signs that parents should look out for in their own kids like withdrawing.