This graphic by the Center for American Progress has been making the rounds. I've seen it on Andrew Sullivan's blog, Moveon.org, Political Loudmouth, Daily Kos, and other places. It really does speak for itself, quite elegantly. Liberals perceive Republicans as basically robbing Peter (the poor) to pay Paul (the rich). Or, to use another analogy, Robin Hood is now stealing from the poor to give to the rich.
It seems to me, regardless of one's political persuasion, if Congress were actually SERIOUS about putting a dent in the deficit, we'd not be asking just the poor and the middle (working) class to shoulder all the burden of the deficit. We'd cut all these entitlements to the wealthy as well. Add up both columns and you get quite a chunk of money. Don't ask the people who can least afford it to be the only persons to take a hit.