Iran's clerical rulers have stepped up suppression of persistent anti-government protests in the country's Kurdish region, deploying troops and killing at least four demonstrators on Sunday, social media posts and rights groups said.
Nationwide protests, sparked by the death of 22-year-old Iranian Kurdish woman Mahsa Amini in September in the custody of morality police, have been at their most intense in the areas where the majority of Iran's 10 million Kurds live.
