They listened to John Lennon:
Imagine there’s no countries
It isn’t hard to do
Nothing to kill or die for
And no religion too
“The Communists are further reproached with desiring to abolish countries and nationality.” …Straight out of the Communist Manifesto, lyrics like that.
“There are, besides, eternal truths, such as freedom, justice, etc., that are common to all states of society. But Communism abolishes eternal truths, it abolishes all religion and all morality, instead of constituting them on a new basis; it therefore acts in contradiction to all past historical experience.” …