New Delhi, Jan 30 (ANI): Minister of State (MoS) for Parliamentary Affairs Mukhtar Abbas Naqvi on Saturday accused the Congress of indulging in caste-based politics He also said that the HRD Ministry is taking necessary steps to bring the Rohith Vemula suicide case under control. Bharatiya Janata Party (BJP) spokesman Nalin Kohli said that Congress vice president Rahul Gandhi must refrain from playing caste politics.