A lot of IRL violence starts with online radicalization. We revisit our conversation with writer and parent Joanna Schroeder, who wrote a guide for parents about what to look out for and how to intervene.

This episode was produced by Avishay Artsy, edited by Matt Collette, fact-checked by Laura Bullard, engineered by Paul Mounsey, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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