I mention this in my comment, the problem is precisely that it is so easy to invalidate protections in common law -- a new law can easily invalidate an old free

I mention this in my comment, the problem is precisely that it is so easy to invalidate protections in common law -- a new law can easily invalidate an old freedom. And yes, "the right to bear arms" being restricted in Australia is an example where this was a net positive. But invalidating habeas corpus, privacy, and free speech are all things that have been done by our government in the past decade. The ability for fundamental rights to be invalidated that easily should be seen as a much bigger problem than people seem to view it as. I used to be in the "we don't need a constitutional bill of rights, we have common law protections" camp as well. But the slow march to remove many of our rights has drastically changed my viewpoint on this topic. [+]: And while it might be inflammatory, it is entirely correct to refer to detention centers as "concentration camps" because they concentrate a section of the population -- in this case possible asylum seekers -- into a single place.