International Mother Language Day 2015 was celebrated across the world on 21 February 2015. The theme for the year 2015 is Inclusive Education through and with Language - Language Matters.
The year 2015 is the 15th anniversary of International Mother Language Day.
The day is observed every year since February 2000 to promote linguistic and cultural diversity and multilingualism.
International Mother Language Day was proclaimed by the General Conference of the United Nations Educational, Scientific and Cultural Organization (UNESCO) in November 1999.
The day, February 21, represents the date in 1952 when students from Bangladesh demonstrating for recognition of their language, Bangla, as one of the two national languages of the then Pakistan, were shot and killed by police in Dhaka, the capital of what is now Bangladesh.
On 16 May 2007 the United Nations General Assembly (UNGA) vides its resolution 61/266 called upon Member States to promote the preservation and protection of all languages used by peoples of the world.
By the same resolution, UNGA proclaimed 2008 as the International Year of Languages, to promote unity in diversity and international understanding, through multilingualism and multiculturalism.