>>15I don't know what you're talking about. The Constitution is the highest law in the United States. The right to free speech is quite substantially a law in the US. The Supreme Court protects political speech. There has been so much online coverage of CIA Black Sites and other secret CIA programs because that's political speech. And, online speech is protected to the point of being a little extreme.
Child pornography is obscenity. CP is illegal because its production endangers children. Writing some opinion piece doesn't harm anyone physically like penetrating a child after emotionally manipulating him for a few months, and potentially alienating them from their family. Being involved in CP creates emotional damage that the child will deal with for the rest of his life. CIA agents have the full protection of the US government; children don't, really. So even though some agents were put in danger by the political speech that revealed their identities, they have the resources to deal with it the pushback while children don't.
Censorship only covers political content. The Supreme Court is openly paranoid about "chilling effects" of censoring any kind of political speech. But removing child pornography? This is not censorship because the production of child pornography harms children whether it was created with the intention of being a political statement. You can murder people to make a political statement, but you will always go to jail.