Campaigns for freedom usually seem impossible at the start and inevitably successful at their conclusion. It has become common for opponents of the Boycotts, Divestment and Sanctions (BDS) campaign to insist that it cannot emulate the success of the fight to isolate apartheid South Africa. The South African sanctions campaign, we are frequently told, enjoyed moral legitimacy in the West which the Palestinian cause is denied. BDS is thus doomed to fail. This shows deep ignorance of the obstacles which the South African campaign overcame.