Here are some of my favorite infographics to explain the real gaps between wealthier and less wealthy, and our collective misconception about it:
Same data, but shown with different sized people.
XKCD: Where money comes from, and where it goes.
Where aid money goes in the world.
The best, and clearest infographic on the subject, from Dan Ariely.
Here is the same data, but made far less clear by some infographic idiot who believes bar charts are the only way to present quantitative data:
Where aid money goes in the world, 2011.
Last: My own global wealth infographic.