I've read through the thread to this point, and from memory, i don't recall anyone suggesting Jimmy Carr should be sensored or removed. Some people have said it was funny, others said it was not. The main conversation seemed to be about Frankie Boyle. So your post, as usual, is a massive over-reaction. It's exactly the type of reaction ignorant bigots give when people explain to them that certain words, phrases or jokes are racist or discriminatory. "Can't even call them Easter Eggs now, cos of the bloody muslims, we might offend them iniit Dave". It takes criticism of an abhorrent joke and suggests that peoples freedoms are being harmed. They're not. Carr has the freedom so say racist stuff, he is not free from the consequences of his words.
The fact is we have as much free speech here as you do in the US. Because we don't have a written constitution, with a first amendment mandating free speech it is easy to lose sight of the fact that Britons historically have, and still do, exercise some of the broadest free speech rights of any people on earth, especially in their ability to criticize the government, a most important bellwether of free speech rights. The American concept of free speech developed directly from the British, and in many important respects, the free speech rights exercised in both countries are quite similar.