Owning class.

How much in your bank account isn't the point — it is how that money got there. It just so happens that practically nobody ever became a billionaire without the use of exploitation.

Yet, it is not just billionaires but any who make their income through exploiting their private ownership over the tools, land, and resources which make production possible that, under the capitalist system, entitles those "owners" to the excess value of labor, in the form of profits, that are generated by the working class – individuals who must sell their labor to these owners for a wage – under their employment.

Plenty of people who voted for the republicans are poor as shit. Selfishness doesn't stop downwards at being rich.

Voting for a party just because you want others to suffer more than you do is pure selfishness too.