Suspension of civil liberties; an aggressive, militaristic ideology; concern with racial/national purity; and preference for a social Darwinist worldview pretty much put Nazism on the far right--not the libertarian right but the authoritarian right. Left-wing concerns are more humanitarian: remove concentrations of power (large corporations being considered a power against employees, consumers, and the environment that can be counterweighted by government regulation), increase individuals' well-being (end hunger, disease, poverty; help people live more rewarding, self-actualizing lives), peace (oppose wars, gun violence, genocide, violence against women), etc. Marxism-Leninism, Stalinism, and Maoism represent the authoritarian left, which shares the authoritarian traits of the authoritarian right but instead pursues vaguely "left-wing" goals. To the authoritarian left, the problem isn't so much concentrations of power but power belonging to the wrong class (the bourgeoisie) instead of the proletariat. The authoritarian left would happily put total power in the "vanguard of the proletariat" (i.e., a Communist party).