I'm glad that you see through trickle down - it's a shame that so many people (over here too) think that shovelling containerloads of cash into the pockets of greed-ridden bastards is somehow a good thing for the economy. It isn't.
It is in no way as simple as this when it comes to the detail, but the basic principle is sound - tax the rich more, they can afford it. Spend it on things for the good of society, such as social programs, health care and welfare. That will have the effect of improving things for everyone, without taking too much away from the middle classes.
I'm not saying that you and I should fork out more - I'm saying that it's reasonable that people who wonder whether to buy a fifth billion dollar yacht this year should pay more towards the benefit of a society which has allowed them to buy their first four billion dollar yachts.
Could there be any greater conceit, than for someone to believe that the universe has to be simple enough for them to be able to understand it ?