Disinformation after a knife attack in the UK transformed a local tragedy into nationwide upheaval. The Guardian's Robyn Vinter explains how it got to this point.

This episode was produced by Amanda Lewellyn and Victoria Chamberlin, edited by Amina Al-Sadi, fact-checked by Matt Collette and Peter Balonon-Rosen, engineered by Andrea Kristinsdottir and Patrick Boyd, and hosted by Noel King.

Transcript at vox.com/today-explained-podcast

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