Mahsa Amini, 22, died while being held by police in Iran, and women are protesting by cutting off their hair and burning their hijabs. After Mahsa Amini, a 22-year-old who died while being held by Iranian police, protests broke out there. After Iran's authorities detected an issue with Amini's headscarf on Tuesday, she was taken into custody. Apparently, Amini was severely beaten. She allegedly died of a heart attack, according to the Iranian authorities, who have refuted the accusations. Amini had no family history of heart disease, according to a relative of hers.