The majority of people who lived in Eastern European socialism regret its fall. The USSR had no colonies, it was an anti-imperialist, de-colonial federation. Sankara learned from Stalin, and was a Marxist-Leninist. Finally, equating Hitler and Stalin equates fascism with socialism, which originated as a form of Holocaust trivialization called Double Genocide Theory. I recommend reading Domenico Losurdo's Towards a Critique of the Category of Totalitarianism.