Facebook has disabled the ‘I Hate Muslims in Oz’ group from their site. This was due to its “explicit statement of hate”, rather than any sense of religious vilification. Holocaust denial groups have also been removed in the past, but only when similarly related to a message of hate.
apud AFP ‘Facebook shuts down Aussie Muslim hate group‘, Sydney Morning Herald (12/6/09)
UPDATE: Looks like the flag-wearers should have watched this: