Ukraine broke out of Russian Empire and then conquered back by Red army, then conquered Republics of Ukraine and Belarus together with Russian Federation formed USSR.

So, yes, Ukrainian communists were with those soviets, who murdered other Ukrainians (and other enslaved nations), and then their siblings have nostalgia about «good times».

That is not a good analogy. Scotland voluntarily formed a union with the rest of the UK and played a disproportionate role in colonialism. Ireland would be a better one.

The weakness in the GP's argument is that Russia is not the Soviet Union, nor is it communist.