You quite underestimate the extent of the Koch Darth Vader part in politics. I love the metaphor, by the way...fits perfectly. I suppose the real point is that the original posted source misrepresents the overall Koch political funding situation. They are the largest political donors of all times.

Regarding WalMart, current controversy in Green Bay is location of a WalMart in redevelopment of GB downtown opposed by mayor (nonpartisan but known GOP) and the specialty shops that have located in the former downtown. Local GOP state rep (who has received Walton campaign monies) just this week called for state withdrawal of state money for downtown renewal if WalMart location isn't approved (shades of Gov. Christie). I have mixed feelings. Understandably the proposed site would detract from what the new "downtown" could be and that is the basis of almost unanimous opposition by the mayor and councilmen, and there are other nearby locations that would be more appropriate for WalMart and downtown. On the other hand, I like WalMart as the part-time employer of handicapped persons...a win-win situation giving a meaningful work life to many who otherwise would not have it by circumstance and giving WalMart cheap labor costs. I know WalMart is viewed as villainous in wages and work benefits but that is balanced by an almost "Salvation Army" service to many of those who otherwise would not just be unemployed but also (and that is the real measure of benefit) otherwise unemployable.

I recall when I was a child growing up in the Knoxville area, there was a local "big lot" grocery chain owned by Cas Walker (who gave Dolly Parton her local start in show biz) which was somewhat as controversial as our later day WalMarts and "notorious" for employing ex-cons. Again a service for the individuals and for society.

So I give somewhat a pass to the Waltons and WalMarts in the political Star Wars, but can see no redeeming pass for the Kochs.

I took a quick look at the contributions with a different eye.
Who does the most good for the country I would say the unions they represent the working people of the country as a whole did more good by offering education and a way people could achieve an active part in the growth of our great nation.
On the other had the republicans are supported by oil companies, banks, auto companies, large corporations. All of whom have tax loopholes and bank overseas. These are the same people that left unregulated brought the country to the last recession. This group of people are irresponsible yet they lead the Republican party