Koch Industries: “Capitalism for their own,” or how the power of corporations in America was built

This is a brilliant journalistic investigation dedicated to one of the most powerful family corporations in America - Koch Industries. Her annual revenue is greater than Goldman Sachs, Facebook and US Steel combined, and the condition of its owners - the Koch brothers - leaves far behind Bill Gates. Its products surround you everywhere: on the fertilizers of Koch Industries, fruits and vegetables that you buy in a supermarket are grown, your bathroom papes are laid, from the synthetic materials of KOCH, diapers for your children are made.
But why is there so little known about Koch Industries and its founders? Why do millionaire brothers prefer to keep their success in the strictest secrecy? Is it because this story has another, unsightly side?