The social system based on and consonant with the altruist morality-with the code of self-sacrifice- is socialism, in all or any of its variants: fascism, Nazism, communism. All of them treat man as a sacrificial animal to be immolated for the benefit of the group, the tribe, the society, the state.
Ayn Rand (1988). “The Ayn Rand Lexicon: Objectivism from A to Z”, p.33, Penguin