One argument against democracy is governance by representatives, which means distant strangers who, despite theoretical accountability by voting, have split interests: first, they must promise that they care and will be effective (community solidarity for change), and second, they must make sure to be re-elected (self-interest as stability).
Both involve compromises that must be hidden: to be effective, you must work with the “enemy,” which runs against the cares of your constituents. The representative must necessarily be two-faced: hide compromise or stall effectiveness.
It seems there is a way in which social mores (ethics, values, social status) and an educated populace (reasonable consideration of multiple variables) could remove this antagonism, and yet harnassing a counterintuitive paradox (self-interest as community support) is the brilliance of democracy.