Furthermore, I also disagree with existing censorship of "illegal" stuff by governments. Not just social/political dissent in China, or ankle porn in Saudi Arabia. Also censorship by the United States, such as gambling, piracy, mail-order drugs, and so on.

However, there is arguably a place for government censorship of criminal activity that demonstrably causes harm. For example, child abuse (but not merely sharing of "child porn") or revenge porn, and so on. But not stuff that's racist, sexist, etc but doesn't directly advocate violence.