After Pakistan's "founding father" Muhammad Ali Jinnah and, later, fellow Bengali Khwaja Nazimuddin declared Urdu as the official state language, protest erupted throughout the eastern wing. On 21 February 1952 (8 Falgun 1359 in Bangla calendar) students protest led to killing of ordinary citizen by the police. More people were killed the next day. In Bangladesh 21st February - 'Ekushey February' in Bangla - is observed as 'Shaheed Dibosh' (Martyr's Day) whilst the United Nations declared it officially as "International Mother Language Day". The Shaheed Minar (Martyr's Column) in Dhaka, and other replicas around the world, was constructed as tribute to those who lost their lives to protect Bangla.
However, the language movement was more than a fight to preserve a rich language dating back over 1,000 years. It was a fight for social and economic justice. A fight to maintain one's own identity at a time when official measures were taken to crush it. A fight taken up by ordinary people, who just wanted to live. A fight taken up by women and children so future generation can say "moder gorob, moder aasha, a'mori Bangla bhasha". For Bengali speaking people worldwide, the language itself is a big part of their history... the very birth of today’s Bangladesh is intimately linked with the Bengali language or Bangla.
Today, Bangla is the 6th most spoken language in the world.
Timeline of major events during Bhasha Andolon of 1947-52
(June 1936 - 14-Point