Real or not, what Tim raises, the historicity of what he describes is real. If he didn't lose 3 of 4 grandparents, someone did.
However there were are still statues of Stalin built in Russia and many remain. He killed 20-40 million, probably closer to the latter. Jews, Christians, aetheists, neither, political prisoners, loyal communists, property owners, serfs, you name it. How many of those were Jews, Tim, do you think?
And Lenin: some 10 million died on his watch. Political executions, closing of synagogues and churches, white Russians, royalists, democrats, socialists, mensheviks, they all went dow. But one toll remains outside all that: the Ukraine famine. The Ukraine famine was caused purposefully by the USSR, they did it for a variety of reasons but one was to quash the nascent nation of Ukraine. Millions upon million dies. How many Jews died on his watch, do you think, Tim?
Tim, they have a statue built to Lenin in Crimea, it's a prominent one:
http://www.art.com/products/p1631904936-sa-i4192138/rolf-richardson-lenin-statue-yalta-crimea-ukraine-europe.htm
http://www.bloomberg.com/news/2014-03-14/crimeans-under-lenin-s-statue-embrace-russia-as-west-unheeded.html
Tim, if you want to start striking off nations and peoples off your list based on the statues they build to genocidal mass murderers, start here. Khmelnytsky can't hold a candle to either of them in terms of death toll or the gruesomeness of their deeds.