Re: It beings.
'This is a terrifying development that domain registrars are acting as censor, and stating that certain types of content can not even have a domain.'
This has nothing to do with censorship.
If two persons from NAMBLA or some such were talking loudly in your local walmart about some of their more unsavoury proclivities you would be more than happy if Walmart asked them to leave. Is that censorship? Hell no, they can talk about what they want but equally a business can ask anybody to leave.
If a business wants to disassociate itself with ANY customer it is perfectly entitled to for any reason it chooses, unless it breaches certain specific laws (here in the UK would be homophobia/racism etc).
Associating itself with TDS WILL damage the reputation of any web service provider, and its an entirely legitimate business argument for refusing to provide that service...