I've always been skeptical of radical freedom of speech and so-called tolerance philosophies, such as John Stuart Mill's or Libertarian notions. The most rational and noble ideas do not always win out--quite the contrary. Tolerance amonts to complicity with the most violent of our tendencies.

I've always been skeptical of radical free speech arguments for that reason. John Stuart Mill's reasoning, for example, that the best, most ratiional ideologies win out is simply counterfactual.