How to deal with Ukrainians that deny Donbass' self determination

Let me start off by saying, not only did Ukrainians constantly tell them to hang "Mocovites," they referred to the separatist fighters as "terrorists" and constantly told them to GTFO of Ukraine, now she denies it ever occured and that Russians should do something about it. Ukrainian crimes were recorded by their own Ukrainian courts, Azov members who were part of Tornado company were found by their own courts of, well you can Google it, unaliving to extortion are on the list. If Russia was shelling the rebels, why do they want to join Russia so badly?