additional support is provided by the abrams foundation, committed to excellence in journalism... park foundation dedicated to heightening public awareness of critical issues... the john d. and catherine t. macarthur foundation committed to building a more just, verdant and peaceful world. more at macfound.org. and by the frontline journalism fund with major support from jon and jo ann hagler. and additional support from koo and patricia yuen, committed to bridging cultural differences in our communities. (waves lapping) ♪ ♪ >> narrator: this is iran. a country where young people film and share their lives every day on social media. (crowd chanting in farsi) >> narrator: this is also iran, an islamic republic ruled by a supreme religious leader, ayatollah ali khamenei. ♪ ♪ in september 2022, anti-government protests swept across the coountry after the death of a young woman in police custody. >> (chanting in farsi): (guns firing) >> narrator: in the crackdown that followed, human rights groups estimate more than 500 iranians have been killed, including 72 children. >> (chanting in