President Ram Nath Kovind, Vice President M Venkaiah Naidu, Prime Minister Narendra Modi, Lok Sabha Speaker Om Birla, LoP Rajya Sabha Mallikarjun Kharge and other Parliamentarians paid floral tribute to Dr BR Ambedkar on his 65th death anniversary in Delhi on December 6. Known as the Father of the Constitution, BR Ambedkar was posthumously conferred with Bharat Ratna.