Protest music thrives in Iran, three years after young woman's death sparked grassroots uprising

The death of Mahsa Amini - a young Kurdish Iranian woman who was arrested and beaten in police custody - sparked widespread protests across Iran in September 2022. Protest songs became a powerful unifying force for the movement. Nahid Siamdoust of the University of Texas at Austin tells The World's Host Carolyn Beeler why Iran's regime has struggled to silence the musicians at its heart.