Award-winning actress and part-time SodaStream salesperson Scarlett Johansson has left her role at the charity Oxfam due to her new position with the carbonated drinks company. Johansson had been an ambassador for Oxfam for eight years, but blames a fundamental difference of opinion for the soured relationship. The Avengers and Her star came under fire recently for endorsing SodaStream, an Israeli company that manufactures some of its products on occupied land in the West Bank. Johanssons SodaStream commercial, which the company says is banned from the Super Bowl as it mentions Coca-Cola and Pepsi.