Very informative: in this chart you can see exactly where the USA spends its tax income on. You can also see the ridiculous amounts spend on defence: even the total of non-military spending (US$ 383 billion) is less than the total on military spending (US$ 399 billion).
Would be nice if a chart like this would be available of more countries for easy comparison. As an example: in the Netherlands, of a total budget of EUR 147 billion, only EUR 8 billion is spend on the Ministry of Defence (source).
(Via Boing Boing)