As an exercise for the reader, I'll again post a part of my favorite definition of the word "community", by Iain Boal:
Community: The maximum shibboleth. A mantra used affirmatively across the entire political and cultural landscape; NPR once interviewed a spokesman from "the organized crime community." There is an implied antithesis to "the state" (with its suggestion of power, authority and central decision), in favor of the local and the face-to-face. The results can be grotesque: the release of asylum and hospital inmates to "the community" often means, in reality, warm ventilation grates.