The problem with making yourself 'technically safe' is that it realistically leaves most non-technical people exposed.
The only way to 'protect' everybody is to cure the cancer, not just your symptoms.
then lets make everybody safe technically. it's hard, but doable. if everyone ran tor and 10% of users ran tor relay, that should be a hell to track, no?
You're proposing a technical solution to a legislative problem. Working with the law (constitutional or otherwise) creates the environment where you aren't trying to work around the issue or 'hide' from anybody.
Privacy laws are there for your protection. As another commenter mentioned, you wouldn't accept the gov't or private corporations reading your mail, e-mail shouldn't be any different.