Ironic, isn’t it? Affluent and middle class white men/women are the ones financing these socialist’s GibsMeDat promises and payouts.
There are the affluent who rose above their station. For instance, ones who came from working class parents, typically among the first in their families to go through college, and are doing well in a professional or entrepreneurial career. These tend to be conservatives.
Then you have those who came from affluent parents and never had to worry about money. They were automatically put in the right schools, made the right connections, and entered lucrative careers with a minimum of effort. Or chose not to have real careers at all because of the trust funds bestowed upon them by their wealthy parents. These tend to be liberal.
Regarding the latter, they never really had to work hard and their financial security was assured at birth. So to them, having their taxes raised to support a growing welfare state is fine with them. No matter how high the taxes go, they never need to worry for themselves as they have daddy's money to fall back on. Many of them never even had a mortgage because their first home was paid for in cash. So perhaps they feel a bit guilty for their good fortune and see it as "social justice" for others to have the government provide for them so that they don't have to work hard either.
Meanwhile, the former group, who had to struggle to attain their prosperity feel put upon that others who chose not to work as hard as they get government largesse at largely their expense.