There was a really monstrous and almost literal genocide in the Mayan area, specifically under Ríos Montt. By now it has been recognized somewhat by Guatemalan society. In fact, Montt was under trial for some crimes. But the U.S. prohibits people from fleeing here.

Of course all such conclusions about appropriate actions against the rich and powerful are based on a fundamental flaw: This is us, and that is them. This crucial principle, deeply embedded in Western culture, suffices to undermine even the most precise analogy and the most impeccable reasoning.

We should therefore be opposed to institutional barriers to that freedom: Military dictatorships, for example. Or states run by a Central Committee.

That was the reason why very few people fleeing the rise of fascism in Europe, especially in Germany, could get to the United States. And there were famous incidents like with the MS Saint Louis, which brought a lot of immigrants, mostly Jewish, from Europe. It reached Cuba, with people expecting to be admitted to the United States from there. But the administration of Franklin D. Roosevelt wouldn't allow them in and they had to go back to Europe where many of them died in concentration camps.

With regard to freedom of expression there are basically two positions: you defend it vigorously for views you hate, or you reject it in favor of Stalinist/Fascist standards.

Modern science and technology can relieve men of the necessity for specialized, imbecile labor. They may, in principle, provide the basis for a rational social order based on free association and democratic control, if we have the will to create it.

There's an interesting book about that called The Third Reich and the Ivory Tower, written by Stephen H. Norwood. It has a long discussion about Harvard, and indeed the school's president, James Conant, did block Jewish faculty. He was the one who prevented European Jews from being admitted to the chemistry department - his field - and also had pretty good relations with the Nazis.