MOST school shooters behave the same way BEFORE they attack: DR. MARISA RANDAZZO, ex-Secret Service

DR. RANDAZZO: With over 20 years of experience studying school shootings, interviewing shooters in prison, here's what I can tell you about school shooters in the U.S.

MOST school shooters behave the same way BEFORE they attack: DR. MARISA RANDAZZO, ex-Secret Service
DR. RANDAZZO: With over 20 years of experience studying school shootings, interviewing shooters in prison, here's what I can tell you about school shooters in the U.S.