Off the top of my head: Salvador Allende in Chile, and Patrice Lumumba in the Congo, were democratically elected socialist leaders who afaik did nothing the average person would consider a major human rights violation. Both of them were couped by the west and replaced with right-wing dictators.
you could send that article from the guardian about fabricated north korean defector stories. https://www.theguardian.com/world/2015/oct/13/why-do-north-korean-defector-testimonies-so-often-fall-apart