The 22-year-old Iranian died in police custody after being arrested for wearing her hijab improperly. Her death has sparked a protest movement calling for the end of a regime that has for decades ruled Iran with an iron fist.

This episode was produced by Haleema Shah and Jillian Weinberger, edited by Matt Collette, fact-checked by Amanda Lewellyn and Laura Bullard, engineered by Efim Shapiro, and hosted by Sean Rameswaram.

Transcript at vox.com/todayexplained

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