So you don't believe in private property?
Of course I do - but income taxes strike at people actually working, while the wealthy, by and large, are immune from these changes. If the goal is to reduce "wealth disparity", then find a way to institute a wealth tax, and replace the income tax with it.
That way, the better you do, the more you pay, rather than "the harder you work, the more you pay", which seems counter-intuitive to me.
Personally, I don't buy into the class warfare - tax policy should first and foremost, balance federal revenue with sustainable growth in the GDP. All federal spending should be aggressively analyzed and viewed as a necessary evil.