Wait, are you trying to say the Russia-backed Donbas “republic” was illegitimate and those separatists who were killed were actually Ukrainians?
You can’t have it both ways. You don’t get to proclaim Donbas a separate country and then claim that when those separatists were killed for waging war on Ukraine, they were Ukrainians.
Get your story straight. Either Donbas is part of Ukraine and these guys were basically terrorists trying to destroy the country, or citizens of the “Donbas People’s Republic” were killed, not Ukrainians.