Really makes you question everything now. Does our system reward deplorable behavior? Does it promote it?
A system rigged by economic desperation rewards deplorable, populist behavior. Take advantage of desperation or intentionally create it, and people will look for an angry ranting strong man to huddle behind and draw strength from.
A system promotes awfulness indirectly if it promotes the pre-conditions for the average person to no longer care about high-minded ideals that, while good for humanity in an absolute sense, don't help them survive in the present moment.
When people feel secure and have a decent amount of personal resources, it's easier to get them to feel charitable towards others, promote empathy, and look down on deplorable behavior. We like to say problems are caused by the "fuck you, I got mine attitude", but often it's really "fuck you, I'm gonna get mine first".
This is getting farther afield, but I've been thinking about it recently: I agree with author Alain de Botton's observation that western society has secularized badly. It has been shrugging off religion, without doing a good job of replacing certain things religion promotes, such as recognizing some people are disadvantaged by circumstances and fate rather than being "losers" in the game of capitalism. Broad-spectrum compassion for others. An ethic of restraining one's ego and maintaining perspective and humility. Meanwhile the religion that remains has increasingly been pushed to a fringe where extremes live, leaving people with a choice between an uncaring meritocracy and crazier forms of religion that promote theocracy, bigotry, and social regression.
This dovetails with survival anxiety, desperation, and lack of hope. A lot of people have been becoming simply meaner and less compassionate, drifting towards amoral nihilism, or clinging that much harder to evangelical madness that educations them with a warped view of the world. They are not dealing with hard times well and aren't interested in looking out for others during hard times. There is less communal identification with the idea of getting through things together.
Which has also made it that much easier for politicians, demagogues, and populists con men like Trump to divide the little people and make them fight against each other, while society's resources are plundered.