Coca Cola's had a rough year. The company dealt with a difficult shakeup in management. Soft drink sales have dropped off. And Coke is facing stiffer competition than ever. The last thing the beverage giant needs is an investor who wants to kick the company when it's down. That's where stock "activist" Max Keiser comes in. He wants to punish the company for its policies around the world. Marketplace's Alisa Roth reports from New York.