Dhaka, Jan 02 (ANI): Former president of Bangladesh and Jatiya Party Chief Hussain Muhammad Ershad, slammed former Prime Minister Khaleda Zia’s son Tarique Rahman for disrespecting nationalist leader Sheikh Mujibur Rahman and using derogatory remark against him. Ershad took a dig at senior vice-chairman of Bangladesh Nationalist Party (BNP) Tarique while addressing a rally of his Jatiya Party on its 29th founding anniversary in Dhaka and said he is introducing nasty politics in the country. Tarique, on December 15 in London, had reportedly said Sheikh Mujibur Rahman was a 'razakar' - a collaborator with Pakistan occupation army in 1971. An arrest warrant of Tarique has been issued by a Dhaka court.