John Kerry has never had to pay a single dollar in income taxes to acquire such wealth. It was inherited by his wife and he simply married into it. His entire Senate salary is merely chump change to him and any income taxes he pays on it does not affect his lifestyle in the least.
This is the man who labels a two income couple working their tails off in high pressure careers as "The Rich".
It must be nice being so wealthy that you have no need to earn any income or worry about income tax rates at any level.
Super-rich liberals favor things like income taxes and inheritance taxes because they keep in place those who want to better themselves while leaving the super-rich liberals largely unaffected.
I don't know exactly how such things work, but I think one of the key notions is that liberals who don't need to much of their money to be liquid can start up "charitable foundations" which do a certain amount of "charity" [favoring the liberals' pet causes of course] while providing the liberals with a nice tax-deductable place to stash their income. When the liberals die, anything they had as personal assets can go into these foundations [tax free of course] which can in turn then earn tax-free investment income until eventually they pay the liberal's heirs (whom the foundations employ). Then, and only then, the liberal's income actually gets taxed for the first time.
Pretty slick system, if you can manage it.