[1] http://en.wikipedia.org/wiki/Dirty_War#The_Disappeared_held_...
Oh, right: nothing.
On the other hand, communists are DIRECTLY responsible for the deaths of millions. Millions.
My comment was unrelated to communism -- I don't need to be convinced that communism is bad.
That's reasoning on the converse. I suspect that left-handed people "filled several important roles" as well. That doesn't make left-handed people responsible.
If you have any evidence that Milton Friedman was in favor of military dictatorship (or, indeed, government coercion of any kind), I'd like to hear it.