Senior Bharatiya Janata Party leader and Rajya Sabha MP Subramanian Swamy on Friday termed Ratan Tata as "a disgrace to the Tata family" and alleged that he is a corrupt person. Further saying that Ratan Tata is a son of an adopted son, Swamy termed the former Chairman of the Board of Tata Sons, Cyrus Mistry, as "an honest man".