It was easy not to buy Cape grapes -- actually it was incredibly tough as they were often the only grapes available in a British winter, but it was an active personal renunciation and gesture. I never buy anything labelled "made in Saudi Arabia". I can't make even the minute difference shunning grapes made by shunning their oil -- apart from the fact I have no car, it's too anonymous. This needs to be done at a higher level, and I can't see any way of demonstrating the groundswell that will make governments listen.