Bashing Christopher Columbus has long been de rigueur among the liberal elite. Today, it has infiltrated our nation’s classrooms and poisons our public discourse. You know the mantra: Columbus was a greedy and egomaniacal villain who brought slavery, disease, “genocide,” and ecological ruin to a previously undisturbed land. Rather than honor this legacy of “hate,” the argument goes, Americans should celebrate the peaceful indigenous peoples who populated this hemisphere long before their lands were stolen by European explorers. The war against Columbus is cloaked in the lexicon of “diversity” and the rhetoric of “inclusion.” But what many of its foot...