Keep the monuments - use them as teaching points.
This stuff happened.
The Soviets didn’t liberate anything or anyone. But the Russian people made enormous sacrifices and the Red Army took staggering losses to kick the Germans out of their country. It’s too bad they did so only in the service of Stalin’s godless anthill. Keep the soldier’s graves but let the monuments rot.
The Ukrainians are tearing them down too. There are still people there who remember the “Holodomor” which killed 10 million people by starvation.