The tragedy with the Crimean Tartars was that they were deported based on heritage, even those who were loyal red army combatants. I'm not saying the situations are a perfect equivalence, but it's the same rationale the US used to intern Japanese-Americans, which communists have always rightfully criticized. Whether it was necessary or not is debatable but it always troubles me whenever I encounter blanket apologism for the action or communists embracing the reasoning.

In addition, those deported were not allowed to resettle in Crimea for 2 decades after the war. We can still support the legacy of the USSR while still acknowledging that this is a blemish.