Violent clashes broke out between two student groups on the Jawaharlal Nehru University (JNU) campus on Sunday evening allegedly over the serving of non-vegetarian food in a hostel even as the other student group had organised a havan on Ram Navami.Violent clashes broke out between two student groups on the Jawaharlal Nehru University (JNU) campus on Sunday evening allegedly over the serving of non-vegetarian food in a hostel even as the other student group had organised a havan on Ram Navami.