I come from the former Czechoslovakia and I dare to say : The Soviet Union did not liberate us, they conquered us.
We exchanged one occupier for another.
I owe the Soviets (and Russia) absolutely nothing, not even for fighting the Germans. It is little mentioned that the Soviets sided with the Nazis and joined the Allies only because the Nazis betrayed and invaded them. I might have been more forgiving if they had behaved like the US and left us democracy and freedom after the war, but that didn't happen, they only achieved their unsavoury goals alongside the Allies, not Nazi Germany. So what should I be grateful to them for?
I will always hate the communists and Russia as a state for what they did. Some might point out that we've had a free country for decades... Yes, it's just that thanks to communism and the Soviet Union, we froze for decades, and although our economy has picked up again, we are simply behind those decades economically, and unless some catastrophe hits the West to "reset" that development, we will be "catching up" for many decades to come.
Liberation is synonymous for word freedom, and we have never had that.