Ursula K. Le Guin said this quote

“ The only social change presented by most SF has been towards authoritarianism, the domination of ignorant masses by a powerful elite—sometimes presented as a warning, but often quite complacently. Socialism is never considered as an alternative, and democracy is quite forgotten. Military virtues are taken as ethical ones. Wealth is assumed to be a righteous goal and a personal virtue. Competitive free-enterprise capitalism is the economic destiny of the entire Galaxy. In general, American SF has assumed a permanent hierarchy of superiors and inferiors, with rich, ambitious, aggressive males at the top, then a great gap, and then at the bottom the poor, the uneducated, the faceless masses, and all the women. ”