Casteism does not support or encourage treason. However, Anti-Hinduism, masked as Rationalism (of DMK), Communism (of Chinese Stooges), and Seculraism (of Ghandi Dynasty and cohoots) are outright treason.
Congress has divided India. Created problems in Kashmir, Assam and everywhere. Communism have supprted China and opposed India always. DMK too wanted a separate nation for Dravidian Cultists.