It's been more than a month since 22-year-old Mahsa Amini died after being detained by Iran's morality police – allegedly for breaking the rule requiring women to wear a hijab. Her death sparked protests that continue to this day.
Women and girls have been at the forefront of the demonstrations, often removing and burning their hijabs in defiance of the authorities.
We hear from some of the protesters themselves. And we talk to Iranian-American writer Reza Aslan, who tells us that what we are seeing today echoes a revolution that took place in Iran more than a century ago.