I think this is extremely stupid. Usually I like anon plans, but this one is poking a tiger with a short stick.
Note that I'm not saying they did this, or have good reason to. It's just that I'm a bit suspicious of anything Anonymous related after the Sabu/Lulzsec story, especially when it relates to propaganda like this.
There is very little precedent for war being the 'right' answer to any problem.
I'd hate to be the script kiddie who has to live with the knowledge that they did something that caused hundreds of thousands of people to die "for the lolz".