 Complete the following phrase:  In 1981, the University of Pristina consisted of 75 per cent ethnic Albanians out of the 47,000 students attending it. During the late 70s and early 80s the economic situation in Kosovo and Yugoslavia was worsening. Furthermore, negative discrimination of students based on ethnicity led Albanian students of the University of Pristina to organize a massive protest on March 11, 1981, known as the 