People who feel inferior are susceptible to superiority myths. Basic versions say their group is superior and will rule everyone someday. Extreme versions claim they deserve to rule because they once ruled, but lost their power through treachery. To radical feminists, the traitors in the matriarchal prehistory myth are men. To the Nation of Islam, the traitor is Yakub, who created the evil white race. (I've long wondered if Yakub inspired L. Ron Hubbard to create Scientology's Xenu myth.)
The palmed card in all myths of a superior past: If the ancient rule was so wonderful, why did anyone revolt? The mythical answer is usually envy or evil or some personal flaw, but if you look at history, there's only one thing that drives people to overthrow their rulers: a desire to end tyranny. The myths of radical feminists and black nationalists are no different in kind than the white supremacist myth of a benevolent Confederacy in which the slaves were happy under the rule of enlightened masters, but Yankees were jealous.
I prefer egalitarian myths.