As to tax cuts going to the rich, please provide documentation that dividend yields go up aftetr tax cuts. I don't think you'll find that is the case.
When poor people get money they spend it at WalMart.
When poor people spend money at Wal Mart, they are injecting cash into the local economy. Some of their money goes to the employees of the store they shopped at. Some of it goes to the company that the store bought its hoods from. Some of it goes to the gas station they used to fill up their tank so they could get to the store. A bit if it goes to the millionaire store owners.
The store owner SHOULD use the extra money to pay the employees more. But, that's not how our society works. Instead, the store owner uses that extra money to enrich himself and (if applicable) his share owners
A tax cut to the store owner (the Waltons, in this case)
goes nowhere except to the Waltons. They aren't going to spend extra money because they got a tax cut. They're going to use that tax cut to invest and turn their $100 billion fortune into $101 billion. That benefits no one but the Waltons.