 Serbian nationalism then developed during the 1960s by intellectuals such as Dobrica Ćosić and challenged the state-sponsored policies of Yugoslavism and "Brotherhood and Unity".Tito's later expulsion of the nationalist-leaning Serbian communist official Aleksandar Ranković in the 1960s was perceived as an attack on Serbian nationalism.After the ousting of Ranković, Serbian nationalist intellectuals increasingly began viewing Yugoslavia as a detrimental experience for the Serb nation.