On 13 May 2016, Osman publicly shamed the headmaster of a school at Narayanganj's Bandar Upazila for allegedly insulting Islam.[6] The incident was recorded and published on YouTube.[7][8][9] The headmaster, Shyamal Kanti Bhakta, filed a charge of assault against him. In October 2018, a Dhaka court discharged Osman from the case.[10]