The Koch brothers have made a name for themselves in business, but most of America knows them from their political views. Paul Blumenthal from the Sunlight Foundation made this viz, which looks into the brothers donations over the past two years. Readers loved the viz and left an article of their own in the comments, noting that their donations have actually been far greater than the visualization implies.
About this Viz
As you can see, the Koch brothers have been very generous across the nation, but especially so in their native midwest.