Congress MP Rahul Gandhi on Tuesday asserted that the Mahagathbandhan' will continue fighting for social justice in Bihar, and the alliance does not need Chief Minister Nitish Kumar for the cause. Speaking at a rally in Purnea district, where his Bharat Jodo Nyay Yatra' entered during the day, Gandhi also took a swipe at Kumar for switching sides frequently. "He (Kumar) cannot exert pressure... he immediately takes a U-turn, the former Congress president said. Kumar on Sunday took oath as the chief minister of Bihar for a record ninth time after a dramatic volte-face, ditching the 'Mahagathbandhan' and the opposition bloc INDIA and forming a new government with the BJP, which he had dumped less than 18 months ago. The Mahagathbandhan' (grand alliance) will fight for social justice in Bihar; we don't require Nitish Kumar for that purpose, we don't require him at all, Gandhi said. Congress is a part of the Mahagathbandhan', which also comprises the RJD and Left parties. Gandhi also