Not even as sinister as sibling comment here talking about genocides, these billionaires are wielding disproportionate political power to encourage policies that effect lower classes negatively to the benefit of their own bottom line.

On a foreign scale, defense contractors have a vested interest in keeping the Middle East unstable and have the political power to push congress towards putting more US forces there. Domestically, it's hard to find a more plausible explanation for so many state governors doing things like opting out of ACA, limiting unions, closing schools, or enabling the Flint water crisis.