Anonymous is a self-given title by the hacktivist group (activist hackers). Online hacking into other servers and computers is genuinely illegal(except when it's done by the gov't, maybe) so all hackers must remain anonymous in that sense.
This particular group did an astounding job backing Wikileaks from networks that tried to put their server down, so I'm absolutely in favour of their work.
Bwahaha... Sign me up!
CHRISTIANS want them to go away not just because they are offensive, but because they expose the whole delusion.