Two recent school shootings are highlighting what extremism researchers see as a growing — and poorly understood — trend among young people who embrace mass violence.
Two recent school shootings are highlighting what extremism researchers see as a growing — and poorly understood — trend among young people who embrace mass violence.
Columbine was almost 26 years ago. So the only people who haven’t had the experience of being in school during the risk of shootings are in their late 40s and older.