Privacy is Paramount
The right to privacy supersedes any mere desire by government to make law enforcement easier for them. The right to privacy by individuals is paramount, and government has no authority to try to make the means of private communications illegal. Since government obtains all of its authority by borrowing delegated authority from us, then government can't have that authority. They can't have it because we don't have that authority to let them borrow. National security is a red herring. The actual bad guy have infinite ways of getting around this like BitTor or simple VPN encryption. The heart of the matter is that the government has exceeded its authority in such a blatant way that all those responsible should go to jail. This is the kind of abuse we would only expect from a fascist dictatorship.