It was a bad thing, but all Yalta did was recognize the facts on the ground. We weren't about to keep marching east.
You'd agree that letting Mao take over China was a bad thing, right?
We "let" Mao take over China? What makes you think we had any say in the matter?
You might even agree that the various Stalinist revolutionaries in South America and Africa were also bad people, right?
Stalinist revolutionaries are bad people.
But not everyone who opposes authoritarian regimes is a Stalinist revolutionary.
If you think that pointing out the evil committed and facilitated at Yalta constitutes "difficulty grasping the evils of authoritarian fascism", you have problems I can't help you with.
I'm familiar with the coterie of Franco and Pinochet apologists on FR. And I disagree with them. Fascism is not an acceptable alternative to communism. And we shouldn't coddle dictators just because they are anti-communist.
Should we ally ourselves with dictators just because they are anti-National Socialist?