During Tito

In the late 1960s, intellectuals in Zagreb called for the recognition of the Croatian language, and engaged in symbolic protests. This was followed by young activist leaders in the Croatian League of Communists, who demanded greater economic autonomy and control over hard currency revenues from tourism. This period, known as the "Croatian Spring," was also marked by an upsurge in revisionist histories of Croatian nationalism: among the best-known was the denial of Ustaša-sponsored murders of Serbs during World War II, written by a former Partisan general, Franjo Tudjman. Tito cracked down on the movement in 1972 purging the party and jailing many dissidents including Tudjman.