Horse Shit!
Income is income. There is no reason to treat unearned income in any manner different than earned income. Lower all rates to one reasonable rate and everyone is treated fairly regardless of how they earn a living. Taxing earned income at higher rates is a slap in the face to people who are not wealthy to begin with.
The problem is that we tax what we want to increase. We want more investment, more savings and more work but tax those things. We should really tax other activities like spending and imports on finished goods.
A tariff based tax system coupled with a national sales tax would be the most fair form of taxation, but implementing it would require moral courage. Something most politicians lack.
Actually that might be a good idea. Forget the talk about taxing capital gains at the ordinary income rate and just lower the ordinary income rate to the capital gains rate. Seriously tho, does anyone here think that the idea has any chance in hell of ever happening? In the mean time, Trump is not interested in lowering any taxes. His push is raising taxes on the evil capitalist hedge demons.