“Victimhood culture” has now been identified as a widening phenomenon by mainstream sociologists. And it is impossible to miss the obvious examples all around us. We can laugh off some of them, for example, the argument that the design of a Starbucks cup is evidence of a secularist war on Christmas. Others, however, are more ominous.

On campuses, activists interpret ordinary interactions as “microaggressions” and set up “safe spaces” to protect students from certain forms of speech. And presidential candidates on both the left and the right routinely motivate supporters by declaring that they are under attack by immigrants or wealthy people.

So who cares if we are becoming a culture of victimhood? We all should. To begin with, victimhood makes it more and more difficult for us to resolve political and social conflicts. The culture feeds a mentality that crowds out a necessary give and take — the very…