As Matthew Continetti demonstrates, the left is very selective in its defense of free speech.

Nor do I recall liberals standing up for the critics of global warming and evolutionary theory, of same-sex marriage and trans rights and women in combat, of riots in Ferguson and of Obama's decision to amnesty millions of illegal immigrants. On the contrary: To dissent from the politically correct and conventional and fashionable is to invite rebuke, disdain, expulsion from polite society, to court the label of Islamophobe or denier or bigot or cisnormative or misogynist or racist or carrier of privilege and irredeemable micro-aggressor. For the right to offend to have any meaning, however, it cannot be limited to theistic religions. You must have the right to offend secular humanists, too.