In 1957, while Che was in the mountains in Cuba
Che defended the Soviet invasion of Hungary in 1956. The Soviets suppressed the revolt by freedom fighters in Hungary. If Che was truly on the side of the oppressed, he would’ve supported the Hungarian revolts and opposed the Soviet invasion. But that wasn’t the case. During his time as a “fighter” in the July 26th movement, which was led by Fidel Castro, the future totalitarian Communist dictator of Cuba, Che defended the Soviet invasion of Hungary. His defense of the Soviet invasion got him into a real heated fight with another member of the July 26th movement. How can we know that? Humberto Fontova, the author of the eye-opening book “Exposing the real Che Guevara and the useful idiots who idolize him”, had an interview with that member’s brother on the fight between him and Che. Page 46 of his book even stated what the member’s brother said.
In that fight, Che called the Hungarian rebels “Fascists” and “CIA agents”. He stated that the Soviets had a duty to invade Hungary and to oppress the freedom fighters who sought freedom and independence. That was just a small taste of what Che Guevara was “fighting” for ["Fought" and "fighting" are in quotation marks because Che wasn't a real Guerrilla fighter, but a coward who loved killing innocent people off the battlefield].
This is telling because in that same year Communist Party USA's leading Stalinist theorist, and incestuous pedophile, Herbert Aptheker "wrote a defense of the Soviet invasion [a book called "The Truth About Hungary"], claiming that Hungarians rejoiced when they saw the Soviet tanks rolling into their nation" and vilified Hungarian freedom fighters as fascists.
This is telling because they knew it was a lie, and they didn't care. See the following post on a historical forum from historian and ex-Communist Ron Radosh
Subject: Aptheker's "The Truth about Hungary" (Radosh)
Re Mark Kramer's incisive comments on Aptheker's "The Truth About Hungary." Decades ago, when Aptheker and I were still talking, I asked him about the book. He replied: "I had a job to do for the Party, and I did it." It was as simple as that.
I would also mention that right after he wrote the book, the Trotskyist Shane Mage authored a pamphlet "The Truth About Herbert Aptheker's 'The Truth About Hungary,'" which dissected the methodology in a devastating fashion. And during the rebellion itself, many Communists could learn the truth about the rebellion from the dispatches from Hungary by Peter Freyer, the British Daily Worker's correspondent. Freyer could not but help see, since he was on the scene, that this was a working-class rebellion against Stalinism, and not a fascist coup that the Soviets were putting down.