Look, he needs to tone down the fucking rhetoric.
The "1%" are not the problem and if he wants them on his side then he needs to stop demonizing them. i.e. don't bite the hand that feeds.
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I'm not exactly pro-welfare, but I would expect a genuine centrist to at least understand that:
1. capitalism creates wealth
2. you need a good amount of it if you want to have enough wealth to redistribute for various social programs
He treats rich people like they're the enemy.
Come to think of it, he treats some non-rich people the same way.
I'm not rich but I do own stocks, I don't want idiotic regulations and high corporate tax rates, they don't benefit me.