Concentrating huge sums of wealth in a very few hands is a threat to the republic.
Here's a pretty good timely article I came across today which paints a different cause to the income inequality/wealth distribution, and opens the possibility of a different solution.
http://review.chicagobooth.edu/econ...er-mind-1-percent-lets-talk-about-001-percent
Basically it argues that
1) Most of the uber-wealthy are self-made, and not inherited wealth
2) There isn't a significant rise in income share by most of the top 1% ( or say People who make $300-$1MM/yr), but rather the growth is all coming from the top .01%.
3) Its all technology driven, and perhaps impossible or foolish to try to reverse. The example being Babe Ruth's Salary today would be $1.1MM, which is the minimum salary of any baseball player now. Athletes that make it aren't making it by holding down the amateur athletes, Its that technology allows the super powerful to scale and generate more profits. Now they're watched by 50 million people rather than 50 thousand.
So when 100 years ago there were 10,000 rich storefront owners, now there's 1 super rich Jeff Bezos that's skills are worth more than the storefront owners of yesteryear, so simple supply and demand warrants that the Jeff Bezos's of the world will earn more share of the income. Same with the best coders, or best of anything in their field. Technology and Scale means those people can earn infinite more profits, and therefore someone, whether its stockholders or their bosses will pay them infinitely more to earn those profits.
Lastly, taxing or re-distributing Jeff Bezos's income to others in the world isn't the best solution as then he'd just go innovate in China. Inequality isn't necessarily getting worse, 30 years ago, the world bank estimated 35% of the world lives in extreme poverty, versus 11% today. Presumaby technology is what makes everyone have running water and power and reduced the extreme poverty, and its inevitiable it will create some income inequality. The solution isn't raising Tesla's corporate tax rate.
It suggests you don't need to take money from the rich to give to the poor, but you do need to train the poor to do something useful. I.E., no more Tribble kids.