The authorities heavily suppressed the rights to freedom of expression, association and peaceful assembly, as well as freedom of religion and belief, and imprisoned scores of individuals who voiced dissent. Trials were systematically unfair. Torture and other ill-treatment was widespread and committed with impunity. Floggings, amputations and other cruel punishments were carried out. The authorities endorsed pervasive discrimination and violence based on gender, political opinion, religious belief, ethnicity, disability, sexual orientation and gender identity. Hundreds of people were executed, some in public, and thousands remained on death row. They included people who were under the age of 18 at the time of the crime.
Read more in here
https://www.amnesty.org/en/countries/middle-east-and-north-africa/iran/report-iran/