Anonymous isn't
Too many comments, and even articles, assume that "Anonymous" is a group in some traditional sense, with leaders, plans, intentions, members.
Hence comments and articles link the pro-WikiLeaks people with the anti-Scientology people and any other protest anywhere on the Internet.
There is no "Anonymous" in that sense.
It's silly to keep pretending there is.
Originally, there was a group of people associated with 4chan that called itself "Anonymous", and it was loosely organized in that forum. But they have mostly disavowed "Chanology". Since the "Chanology" schism, the "group" Anonymous has fractured much farther. Now, ANY protest on the Internet is immediately associated with "Anonymous" as if there were a group there planning all this stuff.
Stop making the stupid assumption that there IS such a group that "is behind" ALL protests. Each protest is composed of folks who, at that moment, feel strongly about that subject. Each protest is different, potentially involving completely different people.