I look at tax laws from a civil rights perspective.
In a nation of laws, the law should affect everyone equally, or not at all. You can not have laws that treat one person one way, and another person a different way. IMO, it is unconstitutional to have different tax rates. The term "no taxation without representation" means something. If you expect someone to pay far more in taxes than you do, then don't complain if that person expects to have more representation than you do.
Big government leads to big lobbying. This is the phrase that could unite the Tea Party and the Occupiers.