Committed to PEOPLE'S RIGHT TO KNOW Vol. 5 Num 1117 Sun. July 22, 2007       Front Page DU teachers protest treatment of 2 ex-PMs A teacher wearing black badge takes class at Dhaka University yesterday demanding release of Awami League chief Sheikh Hasina and an immediate stop to harassment of all political leaders including BNP chief Khaleda Zia. PHOTO: STAR