Thread:Merrystar/@comment-5889551-20150121032448/@comment-11001-20150121034452

It depends on the history of the page.

If it is the most recent revision you can rollback or undo. If it is a previous one you can try "undo"; this may or may not work. If it does not then you have to look at whether you would be better to remove the offensive material by hand, or to restore to a previous version and lose any good edits made since that time. To restore to a previous version you can click the time/date in the history and then when the old version of the page appears, click "edit" and then "publish".