Robinson's Black Marxism transforms historical materialism by arguing that capitalism did not universalise a neutral proletarian subject but developed through racialism, slavery, colonial violence and the persistence of non-European radical traditions. The iconic idea is the Black Radical Tradition: a historical formation of resistance grounded in collective memory, maroonage, revolt, cultural survival and political imagination beyond orthodox Marxist categories. The theoretical contribution lies in rejecting the assumption that race is secondary to class; Robinson shows racial capitalism as constitutive, genealogical and civilisational. His operation is historical archaeology: he reconstructs European feudal residues, Atlantic slavery, African labour, anticolonial resistance and Black intellectual traditions through figures such as Du Bois, C. L. R. James and Richard Wright. The bridge to the wider field is foundational for racial capitalism studies, Black studies and decolonial historiography. The book makes radical theory answerable to histories that Marxism often rendered peripheral.