What are the major controversies involving Udhayanidhi Stalin?

DMK leader Udhayanidhi Stalin, who was detained over an alleged derogatory remark on actress Trisha Krishnan, sparked a row in 2023 when he called for eradication of Sanatana Dharma and compared it with malaria and dengue. He repeated his remarks in the Tamil Nadu Assembly in May. He also faced criticism for calling Sanskrit "a dead language" in November 2025.