"The rich really are different from the rest of us, scientists have found — they are more apt to commit unethical acts because they are more motivated by greed.
"Because rich people have more financial resources, they're less dependent on social bonds for survival, the Berkeley researchers reported Monday in Proceedings of the National Academy of Sciences. As a result, their self-interest reigns and they have fewer qualms about breaking the rules.
"'If you occupy a more insular world, you're less likely to be sensitive to the needs of others,' said study lead author Paul Piff, who is studying for a doctorate in psychology."
The researchers found in experiments that people who are led to feel richer start acting this way, as do winners of lotteries. So it's not entirely innate.
But this does mean that the Republicans' worship of the rich is misplaced; Republicans who are not themselves wealthy tend to be very nice people. I know a lot of such folk, and my experience of them confirms this. But they fail to understand that the affluent captains of industry and politics may talk like them but they don't think like them.
Conversely, poorer people--often disdained by Republicans--tend to have each others' backs (unless they win the lottery...).