Flying paper balls from legislators parried with pieces of cardboard by house marshalls, poster waving and slogan-shouting: The first day of 16th legislative assembly in Uttar Pradesh witnessed an uproar the house has not seen in nearly two decades. The rowdy scenes played out in presence of Chief Minister Yogi Adityanath, the Leader of the House, and former Chief Minister Akhilesh Yadav - the latter's party contributed to much of it.