Shia Muslims form processions during the festival of Ashura in the Bangladesh capital city of Dhaka. Thousands form a procession to commemorate the Karbala tragedy that martyred Hazrat Imam Hossain along with his family and followers. On the 10th of Muharram in Muslim calendar, Muslims mourn the martyrdom of the grandson of Prophet Hazrat Muhammad in the hands of renegades about 1,400 years ago.