Russia isn't communist anymore, although it will become that within the next few decades.
In 1938 Soviet Russia had the largest steel industry and its agriculture was the most mechanized in the world. So you obviously don't know what you're talking about. Soviet Russia unlike the US and other Western countries that were going through a deep depression in the 1930s, was doing well by 1934. Through Stalin's five-year plans, Russia was becoming one of the most industrialized nations on Earth, rivaling the US and other Western powers. Again, you're ignoring the facts.
The Russo-Ukrainians aren't just ethnically Russian, they're also Ukrainian and shouldn't be forced to leave their homes and their lands just because Western Ukrainians want them to. You're defending Western Ukrainian bigotry and terrorism against Russo-Ukrainians. You support the 2014 coup and its ultra-nationalist, neo-nazi sympathizing regime while pretending to be a defender of freedom and human rights.
As far as the wall, again, it had several functions during the cold war, and one of them was to stop scientists, engineers, and those who received a good education in East Germany and the USSR, from leaving to the capitalist West. Yes, that's true. Most scientists and engineers didn't defect, even when they had the opportunity to do so. The same can be said for athletes who competed in international sports, in different competitions including the Olympics. Most Soviet athletes didn't defect but a few did. Due to the unique circumstances of the cold war, of the conflict between the USSR and the US, there were restrictions for Soviet citizens when it came to traveling to the West.
Read this:
en.wikipedia.org
There are restrictions for Americans to travel to Cuba and other countries as well.
As far as trade, aren't you a defender and champion of free trade? Why should the US government stop American private companies from trading with socialist countries? More, American sanctions don't just stop Americans from trading with socialist countries but the whole world. Any country that decides to establish friendly relations with a communist country, a nation that the US has sanctioned, can't trade with the US and can have sanctions imposed upon it as well. It will be ostracized from the international community, economically and otherwise.
Right now if a merchant ship is tracked by the US government unloading or loading cargo in Cuba, that ship will be barred from all American ports for six months:
home.treasury.gov
Cargo-Ship Tracker:
MarineTraffic: Global Ship Tracking Intelligence | AIS Marine Traffic
Any ship that uses the Panama Canal and fails to report that it is going to a Cuban or Venezuelan port, will be barred from using the canal, indefinitely. That means that ship has to go all the way down to the tip of South America, or through the arctic sea with an icebreaker.
All foreign cargo ships have to present their port logs to American port authorities when they arrive and if it shows that they were in Cuba, Venezuela, or any other sanctioned country, they have to leave. They can't unload their cargo, at any American port, including territories like Puerto Rico and Guam. If a company buys a product that has more than 10% American parts, it can't be sold to Cuba or any other sanctioned country. Sanctioned countries can't open bank accounts or lines of credit at banks that are regulated by the United States and that's practically every financial institution in the world, with few exceptions. So of course communist countries are in the fight with one arm tied behind their backs.
Your arbitrary demand for communism to replace capitalism overnight or even in one century to prove its validity is simply disingenuous, unfair, and cynical. Self-serving. You're not going to get rid of communism, it's the future, so you might as well become a communist today. Come to terms with it, because that's the natural course of human economics and production, as technology replaces wage-labor. It's not my fault you're in denial and can't admit it. Advanced technology = high-tech communism.