Rashtriya Janta Dal (RJD) Chief Lalu Prasad Yadav on Thursday criticised Union Home Minister Amit Shah over his remarks on Dr BR Ambedkar. "Amit Shah has gone mad. He must have hatred for Babasaheb Ambedkar. We condemn this madness of his," Lalu said. "Babasaheb Ambedkar is great. [Amit Shah] should renounce politics and leave," he added.