The Association for the Research and Development of Kurdish Language (KURDÝ-DER) has launched a campaign to mark International Mother Language Day, on 21 February. The association is sending postcards written in Kurdish to the jailed mayors and non-governmental organisation representatives.

International Mother Language Day is an observance held annually on 21 February worldwide to promote awareness of linguistic and cultural diversity and multilingualism. It was first announced by UNESCO on 17 November 1999. Its observance was also formally recognized by the United Nations General Assembly in its resolution establishing 2008 as the International Year of Languages.

International Mother Language Day originated as the international recognition of Language Movement Day, which has been commemorated in Bangladesh (formerly East Pakistan) since 1952, when a number of students including the students of the University of Dhaka were killed by the Pakistani police in Dhaka during Bengali Language Movement protests.