Rarified conservative arguments that we should remove Confederate monuments is tantamount to accepting the left’s vision of America as irredeemably racist. Last week, as statues of George Washington and Thomas Jefferson—among many others—were pulled down by angry mobs, conservative writers Rich Lowry and Philip Klein were penning throat-clearing columns explaining how it’s wrong to pull down monuments to the Founders but okay to remove Confederate statues, because you see, Confederates were traitors who fought for slavery.Which, of course they were. But at this point it would be hard to imagine an argument more detached from reality. Lowry and Klein—and all...