Background on this is in a post HERE, but the facts are that wealth inequity is a reality and a problem any way you try and represent it.
And it did not spring up overnight. Rather it is a predictable and inevitable outcome of the prevailing political-economic practice of our country over the past 30 years of lowering taxes on the wealthy and corporations, deregulation in key sectors of the economy, "free trade" agreements, incentives for outsourcing and off-shoring jobs and a lack of investment in education. These moves over a sustained period of time have lined the pockets of the already wealthy and corporations while simultaneously eliminating jobs and opportunity for most Americans.
Sure, these things were most aggressively championed by the Republicans (Reagan, Bush, W and Republican controlled Congresses), but the Democrats are not blameless either. Clinton and Congressional Ds did roll over on these issues many times. If the Rs made it happen, the Ds let it happen.
In any case, it's real. My feeling is that if your someone in the middle or lower class and you're defending tax cuts for the rich and corporations, free trade agreements and feel that "the 1%" should get all they can...well, I humbly suggest your head is in the sand and you are advocating things that are directly hurting you.
Food for thought.