This contribution addresses the dynamics of Dutch memory politics in the Dutch–South African exchanges between 1948 and 1975. The 1948 election victory of the Nationalist Party and their Apartheid policies brought about painful memories of Nazi attrocities, antisemitic persecurtion and anti-fascist struggle in the Netherlands. Soon, however, the Dutch government acquired an interest in highlighting a different history in relation to South Africa when referring to the notion of stamverwantschap. This implied an ethnic–racial identification of the Dutch with White, Nationalist South Africans on the basis of an alleged shared history of Dutchness. These memory politics changed after ‘Sharpeville’ in the 1960s. Once more memories of racist exclusion during National Socialism were revived in relation to the Apartheid regime. These memories facilitated and were strengthened by a growing anti-Apartheid movement. Yet, in their effort to be ‘on the right side of history’, the grassroots memory politics of the anti-Apartheid movement ignored the Dutch colonial implementation of racial inequality and its effects, not only on the Apartheid policies but also in contemporary Dutch society. This article aims to explore spaces for a synergy between narratives of historical catastrophe such as colonialism and Nazism, both with deep historical and intellectual roots in many parts of the world.