A more extreme example is the Amanda Knox article on Wikipedia. For years it was kept deleted by a cabal of British English speaking administrators and editors (Knox's murdered roommate was British). A deletion review finally overturned the deletion a couple weeks after Knox's conviction was overturned.
I didn't know about the Wikipedia issues around that tragedy, but found it interesting from a sociological standpoint. So I tried looking for similar cases of the line between fact & opinion blurring on battleground Wikipedia, and found this, in case anyone else is interested:
http://blogs.seattleweekly.com/dailyweekly/2011/03/amanda_kn...