Don't like military spending? Defund it by donating all your taxes to the arts instead. Public school programs not teaching enough creation theory? Take their money away and give it to churches. Charity spending is seen as an enormous loophole by quite a few people. And that doesn't even get into scams such as donor advised funds.

http://www.pbs.org/newshour/making-sense/raw-deal-taxpayer-d...