All other countries of Eastern Europe had voted to join the Soviet Union. This is not an abstract distinction, as the Soviets used this vote to trumpet to the world that the people joined voluntarily. And once a country had joined, it was not allowed to quit, as Poland, Hungary, and Czechoslovakia discovered.
Except the voting wasn't voluntary. Some countries, e.g. Estonia, Latvia, Lithuania, and Poland, were doomed from the start. Stalin hated the Poles because they had beaten the Soviets in a post-WWI war. He had always intended to force it back into the USSR. The Baltic States, having been part of the Russian Empire for centuries, were destined to be part of the Soviet sphere via the Molotov-Ribbentrop Pact, the existence of which most Russians deny today, along with the fact that Nazi Germany invaded Poland on September 1, 1939 with the Soviets joining them on September 17, 1939.
Soviet thugs were employed to convince local people to vote for the communists or stay home. Their tactics ranged from propaganda to forced censorship to physical intimidation of voters.
Austria was allowed to leave the USSR for three basic reasons. First, Stalin died in March 1953, changing the Soviet dynamic. Second, Austrians generally denied that they had joined the Third Reich willingly, even though they had done so in large numbers. And third, Austrians refused to vote to join the Soviet Union.
And today the alt-left has adopted communist tactics, describing anyone with a different opinion as a fascist, similar to how Russians use the same word for Ukrainian nationalists.
They are using the Internet monopolies, to censor opposing viewpoints. Websites that reveal that Islamists are not misunderstanding Islam, but simply interpreting it literally, are coerced into being shuttered, similar to how Turkey's schools are dropping evolution and teaching jihad.
The alt-left ignores the reality of Islam and substitutes a politically-correct, but historically inaccurate version of it. They ignore the common practices of instant divorces -- the triple talaq allows Muslim men to divorce their wives by simply saying the word talaq three times -- and of honor killings, not to mention that members of the favorite minority of leftists, LGBTs, are regularly murdered by Muslims.
They are going after neo-Nazis, who as a group are rather ignorant and violent, but also anyone who even remotely resembles them. When they make a mistake, they adamantly refused to change their minds. They bring clubs, urine-filled balloons, and other weapons to protests, hiding their faces like criminals everywhere.
They violently attack U.S. Navy sailors simply for having haircuts not approved by leftists.
They violently attack journalists who are merely reporting on a protest.
And the most aggressive leftists murder police officers.
The alt-left is storming the U.S. like Bolsheviks at the Winter Palace in late 1917.
The alt-left is attempting a cultural revolution in a similar manner to the Red Guards.
The country will not survive being run by monopolies. In the case of Standard Oil, we broke it up to prevent greedy capitalists from gouging consumers. With respect to the Internet monopolies -- Google, Facebook, PayPal, Twitter, and others -- we need to regulate them as we did AT&T before January 1, 1984, to prevent corporate dictatorship.