The people being taxed for basic income will feel like they are being targeted or hunted.
We are reaching a social security crisis as the Baby Boomers retire and there will become more people on social security than working to pay taxes to support it. Either the fed increases taxes on workers or they print up more money and go into debt.
Whomever becomes President in 2016 is going to have to clean up social security as well as address this income inequality issue and basic income.
In all honesty if you put a 80% tax on the rich, they will just move out of the USA to a nation with lower taxes and move their business and jobs there.