@Robert Gentel,
Let me repharse my previous answer.
We shouldn't in any way punish people for making unpopular oppinions, then there would only be dictators left. We wouldn't have highly advanced medical science, astronomy, astrophysics ..etc, we sorely need "free thinkers", havn't we all see absurd ideas being realized hundredts of years later?
However we can end up in a paradox, I don't like people advocating rape, which is a sick idea, in such rare extreme cases people should get a warning, and eventually banned, but on the other hand where do we draw the line?
Imo we shouldn't issue warnings against talk of assisted suicide, even if it's illegal and immoral, which many would compare to advocation of rape.
On the other hand there seems to be an algorithm of how to differ, rape isn't a voulenteerd action of the victim, but assisted suicide is a voulenteerd action of the victim, so in essence we shouldn't allow advocation of violence against people's free will, but we sould allow dicussions about such things.