For some years there’s been an Internet rumor that Denzel Washington rejects Hollywood’s leftist politics. It’s hard to square with his history of contributing exclusively to Democrats for federal office. But Mr. Washington also has an intriguing habit of deviating from the liberal script on social policy. So perhaps the star of “The Equalizer” can appreciate the Trump era’s benefits for the least powerful in our economy.

Democrats have built their 2020 campaigns around collapsing claims of soaring income inequality and an...