In January 2015, Muslim terrorists massacred cartoonists and writers at the Paris offices of the satirical magazine Charlie Hebdo, proclaiming to be avenging Islam's prophet. The rampage, which included the murders of hostages at a kosher market, prompted global leaders and throngs of citizens to rally in support of free expression. But was the support genuine? In this Broadside, Andrew C. McCarthy explains how leading Islamists have sought to supplant free expression with the blasphemy standards of Islamic law, gaining the support of the U.S. and other Western governments. But free speech is the lifeblood of a functioning democratic society, essential to our capacity to understand, protect ourselves from, and ultimately defeat our enemies.