Tehran’s violent crackdown on peaceful protests and discrimination against women and girls triggered severe rights violations, many amounting to crimes against humanity, a UN fact-finding mission concluded Friday. Iran was rocked by widespread demonstrations sparked by the September 2022 death of Mahsa Amini, a 22-year-old Iranian Kurd who had been arrested for allegedly violating the strict dress rule for women based on Islamic sharia law. Anger over her death rapidly expanded into weeks of taboo-breaking protests in an open challenge to the Islamic Republic’s system of government under supre…