I feel like this thread is just designed to start a row but for my two cents I'd say it's a bit of a generalisation to imply that upper class, wealthy people aren't empathetic and look down on the working class.
I agree. I hate these sorts of statistics, life is way more complicated than that. Highly successful people often have a selfish, sociopathic streak and they are more concerned with being driven than with being liked. They don't always have great empathy. That's why they are successful, even if they aren't always likeable. And success usually comes with high financial reward. I think it's over-simplistic to say therefore, that rich people lack empathy. There is also evidence to show that richer people tend to give more readily to charity than poorer people. The obvious answer to that is that they do because they can. It doesn't mean that poor people are meaner.
Often people with anti-social personality disorders, low levels of personal responsibility and very low levels of empathy are, in general quite poor, because they lack the self discipline and boundaries to hold down a job for very long, and cannot get along with people and do not react well to authority.
I think it's an over-generalisation on that basis, to think that poor people are more anti-social than rich people and that they lack self discipline and personal responsibility in large numbers.