Complex sentence: Blainey coined the term the "Black armband view of history" to refer to those historians, usually leftist, who accused Australians of genocide against Aborigines having previously referred to nationalistic histories as the "three cheers" school.
Split into simpler sentences: Blainey coined the term the "Black armband view of history" to refer to those historians, usually leftist, who accused Australians of genocide against Aborigines. Blainey referred to the contrasting positive histories as the "three cheers" school.