Dissent in the ranks of so-called “marginalized groups,” often viewed as natural constituencies for the left, rarely fails to draw a backlash from progressives and sympathy from conservatives. Recently, such a controversy erupted when rap artist Kanye West voiced support on Twitter for Candace Owens, an African-American conservative YouTuber and Donald Trump supporter. West’s tweet—“I love the way Candace Owens thinks”—was met with much wailing and gnashing of teeth on the left and much celebration on the right (partly out of sheer gloating at the left’s dismay). There has also been more thoughtful commentary, including a Quillette essay by Columbia University philosophy student Coleman Hughes looking at the ways in which standard left-of-center politics in America fail to represent the diversity of opinion in the black community. This is a healthy discussion. Unfortunately, in their understandable frustration with the social and racial orthodoxies that currently dominate liberal political culture, conservatives and libertarians risk embracing self-styled dissenters who are (to borrow a term from the social justice left) problematic allies. This is true of West, whose …