My opinion on the subject is mixed.
I agree that something needs to be done here. The scary thing is that I do not think this battle can be won only over the Internet itself.
What's more, as strong as Anonymous might be, I notice that China seems to have so far failed to suffer their wrath very much at all given that they have been some of the worst offenders with information control. I'm guessing largely because there is little that can be done against China purely online, and what's more any actions from within China risk getting someone tortured and/or killed. The nations they are calling out are ones that arguably have civil liberties policies they can exploit, and where they know the techniques used to root them out will be limited. Perhaps I missed it, but I had been waiting to see if they would do anything to China the way they tried to make a point with Australia, but so far nothing has materialized.
That said, my own nation (the USA) seems to be involved and does need to be stopped, especially seeing is this is the exact opposite of what it's supposed to stand for.
I am hoping that at the very least Anonymous can rally the people of the US, either in sufficient numbers to cause the goverment to withdraw from this, or if the need arises and the goverment is unresponsive, to make use of our "right to keep and bear arms" since that is exactly what it's for. Forget impeachment, if down the road the only way to protect free speech in this country is for the people to march on their own elected officials and forcibly remove them, that's what needs to happen. Perhaps Anonymous will succeed in putting enough pressure on the goverment where it will not come to that though.