True freedom, of any kind, requires freedom to say things and think things in private. I sometimes think horrible things and even discuss them with my friends. I need that space to work out issues. Without a truly safe space I would eventually go mad as I suspect many people would. The other part of this is that a basic requirement of freedom is trust with accountability. It means we allow things that may be harmful but if things go bad we hold those responsible accountable after the fact. It also means we may not catch all the bad guys and that is OK because the alternative is that everyone turns into a bad guy when we prevent people from doing things in case they will be bad. There is a balance here but the position that a govt will always have access to all private individual (acting in a private capacity) communications is not anywhere near a reasonable balance.