I've always thought that the line about people voting against their own interests was just addressing an irrelevant point. Billionaires who support Sanders and

I've always thought that the line about people voting against their own interests was just addressing an irrelevant point. Billionaires who support Sanders and Warren are voting against their own interest because they'd get taxed higher, does anyone think that's bad? There's nothing wrong with voting on principle, rather than for what directly benefits you personally.