I have somewhat less fear of gov't censorship versus the private companies doing it and never reporting it, never being found out.
As for spammers, I wish there was ONE effective law: "No mail server that sends out messages can deny receipt of REPLYs."
Therefore, any spam sent to me would be forced to receive all volume of REPLYs. They send out 800Gb of bandwidth? They must accept all replies. And the vicious public might think, "Why not spam-out my own replies? I'll send that one spammer 800 REPLYs. Tie up HIS server. Make him pay for MORE disk space and consumed bandwidth."
Make them "enjoy" the total responsibility for their 'service', so to speak.