At Shahbag Square in Dhaka, it has been four tumultuous weeks since a trickle of angry students turned into deluge and then a tsunami that swept in a brand new force in Bangladesh, the force of its youth, angry and determined to be heard, angry and determined to alter the course of their country. Four weeks since February 5, the numbers may have diminished a little at Shahbag but the passion is still there in plenty. Passion fuelled by a huge number of young students who have turned slogan shouting into and art, none better than 22-year-old Lucky Akthar whose inspired, imaginative, emotional war cries are guaranteed to make the hair stand on end.