 Serbian nationalism escalated following the death of Tito in 1980.Serbian intellectuals began breaking a number of taboos—for example, Branko Petranović identified Mihailović, the Chetnik rival of Tito during World War II as being an important "anti-fascist".Dobrica Ćosić joined other Serb political writers in writing the highly controversial Memorandum of the Serbian Academy of Sciences and Arts of 1986.