Tribalism uber alles.
The “Western” nuclear family is an American invention that resulted from America being a place to which people emigrated as individuals leaving the almost universal Extended Families that were the norm throughout the world, The Communist BLM wishes to destroy this innovation to return to what? Not the traditional extended family, but to atomised society, without any family structure at all. Anarchy is the order of the day followed very quickly by rule of the strongest. BLM is historically mistaken if it thinks it will be the strongest.