"Bangladesh had emerged as a secular state on the grave of Pakistani religious ideals [but] pro-Pakistanis captured power after the 1975 assassination of Bangladesh's founding father Bangabandhu Sheikh Mujibur Rahman [and inserted] discriminatory clause(s) between Muslim and non-Muslim [that were not included] in the original constitution of Bangladesh. ...After the assassination of Bangabandhu, two military rulers. General Ziaur Rahman and General H.M. Ershad removed the roots of the country's secular, non-communal and humane ideals. They changed the constitution to serve a vested quarter and thus eliminated the clause of equal rights for the Hindus, Christians and Buddhists along with Indigenous ethnic communities like Chakma, Marma, Tripura, Maug, Hajong, etc. In the original constitution, which was written in 1972, Article 12 in Part II enshrined 'secularism and freedom of Religion' in the section called Fundamental Principle of State Policy. General Ziaur Rahman's military government totally erased this part of the constitution and that was how the religious and ethnic minority groups became second- class citizens to suffer state discrimination.’"
January 1, 1970
https://en.wikiquote.org/wiki/Freedom_of_religion_in_Bangladesh