Anti-fracking protesters marched...to Shell South Africa’s offices to hand over a letter saying the global oil company was not welcome in the Karoo. [The march was] [o]rganised by the Treasure the Karoo Action Group and civil rights organisation AfriForum...Karoo Action...leader Jonathan Deal said about 1,000 people participated in the march...He said fracking would irreparably harm the ecologically sensitive Karoo area with little prospect of sustainable economic development...A Shell SA spokeswoman said: "A memorandum was handed over to us and we have taken note of it."...The letter stated that...Shell...CEO Peter Voser had admitted his regret over involving the group in shale-gas extraction..."If you can’t make an economic success of it in America, how can you expect to do it in this water-scarce country?" the letter asked. "...[I]n Shell’s own country there is a moratorium on shale-gas mining — if it is not good enough for them, why should it be good enough for South Africa?"