Here is an article regarding the rich paying less taxes, income increases, tax rates drop.
That's... not exactly accurate. There is the perversely low capital gains tax, and capital gains are a large percentage of the rich's income, but regular income is still taxed progressively - Warren Buffett may be a bit of an extreme case. Due to income structure, they pay a smaller percentage than one would assume, but the absolute tax per capita is still higher... I may just have misunderstood what you wrote in your original post.
Investments don't really go back into the economy, they go back to the rich specifically.
Well, it depends on what terms you think in: In monetary terms, sure - they sell stuff, after all. In real terms everyone profits, as prices fall due to increased production, assuming consumption to be nearly constant. Imagine no investments at all: We wouldn't even have stone tools, because they are an investment... When thinking about the economy as a whole, it is important to remember that it's not a zero-sum game.
I think jumping from "more taxes for the rich" to "kill the rich" is a rather large leap to make. Perhaps somewhat hyperbolic?
Well, you said that dehumanizing the rich is okay because they're in charge. And things that aren't human can usually be killed with impunity... I'm not saying you're there yet, but there are some striking (and kinda scary) similarities.
edit: I probably couldn't define an exact line between when someone becomes upper middle class and when they become truly rich. I suppose that is relative. But if we are talking about the upper 2-3%, I think that might give a clearer picture, as that small portion of the populace is the most problematic.
Upper 2-3%? I'm fairly sure that includes my parents. My mom's a headmaster, my dad's a physicist - that's two big paychecks, especially when you take into account that as Europeans they get benefits that need to be taken into account when comparing against the American situation. As to my parents' stance on oppressing the poor, look at my previous post.
Some colleagues of my dad are Americans btw, and aren't doing too bad either - and still they are among the kindest (and most firmly Democratic!) people I know.
My point is generalizations are bad, mkay?