It started with a bomb thrown into a cinema attended mostly by right-wingers.[5] Rumors spread that left-wingers had thrown the bomb. The next day, a bomb was thrown into a coffee-shop frequently visited by left-wingers,[5] In the evening of 21 December 1978 the teachers Hacı Çolak and Mustafa Yüzbaşıoğlu, known as left-wingers, were killed on their way home.[6] While a crowd of some 5,000 people prepared for the funeral, right-wing groups stirred up emotions saying that "the communists are going to bomb the [mosque, and will massacre our Muslim brothers".[6]