1972 Sindhi Language Bill

1972 Sindhi Language Bill was introduced by the Chief Minister Mumtaz Bhutto on 3 July 1972, in the Sindh Assembly, Pakistan. The 1972 Language violence in Sindh occurred starting on 7 July 1972, when the Sindh Assembly passed the Sind Teaching, Promotion and Use of Sindhi Language Bill, 1972 which established Sindhi language as the sole official language of the province resulting in language violence in Sindh.

Source: Wikipedia — 1972 Sindhi Language Bill (CC BY-SA 4.0)