Where there is a global consensus to edit in a certain way, it should be respected and cannot be overruled by a local consensus. However, on subjects where there is no global consensus, a local consensus should be taken into account.
Consensus among a limited group of editors, at one place and time, cannot override community consensus on a wider scale. For instance, unless they can convince the broader community that such action is right, participants in a wikiproject cannot decide that some generally accepted policy or guideline does not apply to articles within its scope.
