Good point! Since my suggestion actually would not stop trolls (abusive users) anyway (they would just click it so they could then abuse the site), how about blocking all Tor traffic with this message:
"
Why we are blocking Tor users
You appear not to support dictatorship and or want to live under a dictatorship. As the operator of this site, I don't believe in freedom of speech or expression on any subject, even banal everyday subjects. For all subjects, I oppose freedom of the press, freedom of speech, and the right to read anonymously or express anonymous opinions, regardless of content. If I could, I would repeal the fourth amendment ('[t]he right of the people to be secure in their persons, houses, papers, and effects'). Come back when you are ready to be tracked by your government."
Fair compromise? It sends the message across while blocking all Tor users.
" Why we are blocking Tor users
You appear not to support dictatorship and or want to live under a dictatorship. As the operator of this site, I don't believe in freedom of speech or expression on any subject, even banal everyday subjects. For all subjects, I oppose freedom of the press, freedom of speech, and the right to read anonymously or express anonymous opinions, regardless of content. If I could, I would repeal the fourth amendment ('[t]he right of the people to be secure in their persons, houses, papers, and effects'). Come back when you are ready to be tracked by your government."
Fair compromise? It sends the message across while blocking all Tor users.