Engels again on tribalism:

"Within the tribe there is as yet no difference between rights and duties; the question whether participation in public affairs, in blood revenge or atonement, is a right or a duty, does not exist for the Indian; it would seem to him just as absurd as the question whether it was a right or a duty to sleep, eat, or hunt. A division of the tribe or of the gens into different classes was equally impossible."

Anti-tribal sentiment has no place in a communist movement.