Sentence:  Despite the three decades that have passed since the end of the second world war, <WSD>fascism</WSD> remains a subject of much heated argument. ... It also continues to be a subject of controversy, partly because it collides with so many preconceived ideological notions, partly because generalizations are made difficult by the fact that there was not one <WSD>fascism</WSD> but several <WSD>fascisms</WSD>. 
Meaning of the word marked with <WSD> tags:  Any right-wing, authoritarian, nationalist ideology characterized by centralized, totalitarian governance, strong regimentation of the economy and of society, and repression of criticism or opposition.