For example, the creation of the food stamp program didn’t just make the lives of recipients a bit easier. It also had major positive impacts on the long-term health of children from poor families, which made them more productive as adults — more likely to pay taxes, less likely to need further public assistance.

The same goes for Medicaid, where new studies suggest that more than half of each dollar spent on health care for children eventually comes back as higher tax receipts from healthier adults.

What about the idea that anti-poverty programs create a “poverty trap,” reducing the incentive for people to work their way to a better life? That’s a very popular notion on the right. But the reality is that there are very few Americans getting food stamps or Medicaid who could and should be working but aren’t.

It’s true that some calculations indicate that means-tested programs — programs available only to those with sufficiently low incomes — can create disincentives for working and earning. But the evidence suggests that while safety net programs have some adverse effect on incentives, it’s a much smaller effect than many policymakers believe.

Furthermore, we could reduce those disincentives by making programs more generous, not less — providing more aid to the near-poor rather than less aid to the poor. Somehow, conservatives never seem to consider that option.

So what’s really behind the war on the poor? Pretty clearly, the pain this war will inflict is a feature, not a bug. Trump and his friends aren’t punishing the poor reluctantly, out of the belief that they must be cruel to be kind. They just want to be cruel.

Glenn Thrush of The New York Times reported, “Mr. Trump, aides said, refers to nearly every program that provides benefits to poor people as welfare, a term he regards as derogatory.” And I guess you can see where that comes from. After all, he’s a self-made man who can’t attribute any of his own success to, say, inherited wealth. Oh, wait.

Seriously, a lot of people both in this administration and in Congress simply feel no empathy for the poor. Some of that lack of empathy surely reflects racial animus. But while the war on the poor will disproportionately hurt minority groups, it will also hurt a lot of low-income whites — in fact, it will surely end up hurting a lot of people who voted for Trump. Will they notice?