This document discusses the history and recognition of the Bengali language movement in Assam, India. It notes that in 1952, students started protesting to demand Bengali as their mother tongue. In 1961, police fired on protesters in Silchar who were demanding the use of the Bengali language, killing 11 people. Since then, Bengalis in Assam observe May 19 as Language Movement Day. In 1999, UNESCO recognized the Bengali language movement and promoted the basic human right to use one's mother language and linguistic diversity.