More tricky when those policies involve matters
outside wikipedia. For
instance, when there're legal issues involved, and the community wants
to do it the other way
If there are definite legal issues then it's easy - the law definitely
takes precedence over consensus. Possible legal issues (ie. lots of
comments starting: "IANAL") are quick tricky to handle. Chances are
there is no legal issue and you should go with the community, but if
you're wrong, the consequences could be nasty.