One of my favorite questions to ask in (especially) Introduction to Sociology classes is: In an ideal world, for what reason does the U.S. government exist? That is, what is a state for? For protection from other states? To protect private property? To maximize happiness? To pool and then redistribute resources for the collective good? It’s something most of them have never thought about. After a discussion, I show them this:

This is where our federal tax dollars go. Students are horrified by the military spending, but completely stumped by the interest on the debt. Most of them have no idea that our debt has any consequences at all.

The pie chart is from http://www.nationalpriorities.org/. You can go every year and update your chart here.