Unfortunately the demand for fairness towards minority views sometimes strays into demands that bigotry should get its "fair share" of airing. A prime example would be Holocaust-deniers demanding that they have a right to be heard under the banner of free speech. My view is that Holocaust-deniers and certain other purveyors of hatred have forfeited their right to be heard. Perhaps cases like that are simple enough, though still not without argument, but there are plenty of others just one side or another of an imaginary red line, which you and I may draw in different places, that are not so easy. You could argue that the simplest thing is just to let it all hang out, but then you are hurting the targets of the bigots' aggression.