For 35 years the GOP has controlled tax rates and killed the working-class and middle-class... Democrats including the Democratic rich want to raise taxes on the rich and help the rest of America which the GOP has been ruining for 35 years.
So says the Socialist.
For 35 years, the GOP has controlled tax rates,
EVEN WHEN THE DEMOCRATS WERE IN POWER? 
In a capitalist society, the "rich" are the economic engine which drive the economy. It is their succeeding to BE rich that allows them to finance and create industry, plants, and jobs. Only a socialist would think that their BEING rich is a "problem" to be crushed through massive forfeiture of their wealth to be given to those who don't produce or produce little. By confiscating their wealth, not only do you take away their means to fuel the economy, you take away the incentive, leading to economic collapse for all.
Meantime, let's look at the population as a function of income vs. amount of total tax burden in this chart, the best I could find showing the issue on the web. Yes, the Middle Class, those disappearing columns on the right, those are the people paying an infinitesimal part of the total tax burden that Franco's GOP is "crushing." Meantime, those comparatively few uber rich on the far left, those are the people just not paying enough yet that Franco's Democrats would have pay their "fair share."
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If anyone can show me where I've gone "far wrong" in any of this, I would be glad to see your "sober, astute" data.