On Wednesday, pro-BNP Jatiyatabadi Chhatra Dal (JCD) activists and the police formed a cordon round the Dhaka University (DU) campus to bar pro-Awami League Bangladesh Chhatra League (BCL) supporters, who they blamed for Tuesday's bomb blast, from entering the campus. Police misbehaved with two teachers and later said that their cars did not have proper stickers. Matiur Rahman Choudhury has more on the story.