Violent protests erupted across Bangladesh after Sharif Osman Hadi died late Thursday in Singapore after six days on life support following a gunshot to the head while launching his campaign for national elections, after authorities said he had been hospitalized following the attack.Hadi, 32, a spokesperson for the student-led platform Inquilab Mancha, was flown abroad for treatment after being shot by masked assailants in Dhaka last Friday; mobs attacked and set fire to the offices of Prothom Alo, assaulted the Daily Star and torched Chhayanaut as security forces were deployed and interim leader Muhammad Yunus declared a day of state mourning and vowed a transparent investigation.