Prosecuting Opinion in the Name of Tolerance

The demand for control of opinion, incorporated into human rights conventions and increasingly enacted into law, calls the coherence of human rights thought into question. Human rights forbid prosecution of those who deny God, but demand it for those who deny the gas chambers.They require stamping out advocacy of sexism, but favor advocacy of sexual immorality. Isn’t this just special pleading?

The problem is presented most vividly in the case of criminal prosecutions for the mere expression of opinion. Unfortunately, most relevant materials on the net are either highly polemical or abstract and conclusory. The following are therefore only random items I have come across. If you have others, please let me know!