In another case of caste-based violence among school students in Tamil Nadu, more than 20 caste Hindu students belonging to the Urali Gounder community attacked a Dalit student and his grandmother in Karur district on Saturday, August 26, for laughing inside a bus. This is the third such attack in the state in 20 days. Velliyanai police have arrested four youths and booked them under the provisions of the Indian Penal Code and the Scheduled Castes and Scheduled Tribes (Prevention of Atrocities) Act, 1989.