Communitarianism is a 20th Century political doctrine which emphasizes the interest of communities and societies over those of the individual. While not necessarily hostile to Liberalism or Social Democracy per se, it does oppose individualist doctrines like Libertarianism (which stresses human independence and the importance of individual self-reliance and liberty) and most aspects of modern Conservatism, advocating instead ideas such as civil society (the concept of voluntary civic and social organizations and institutions, as opposed to the force-backed structures of a state and commercial institutions).