Why Ghulam Nabi was not happy with congress party?

After a long political innings of 52 years in Congress, 73-year-old Ghulam Nabi Azad today resigned from all Congress posts. He was one of the few leaders of the Congress who, from former Prime Ministers Indira Gandhi and Rajiv Gandhi to P.V. Narasimha Rao and Dr. Manmohan Singh. Watch Black & White.