I don't have time to socratically convince you of it, so i'll just spell it out: you can't tolerate intolerance of groups, persons or behaviors (that don't infringe on other people's liberty) in a _democracy_ because it will undermine the legitimacy and thus participation of said group or person within the democracy itself.

I realize that "intolerance of intolerance" is paradoxical in nature, but common sense and a little charity in interpretation goes a long way.