In the past few days, the Tate gallery in London has been the target of protests because it receives funding from BP. My girlfriend and I have been discussing this, and where she finds that the use of tactics that cause damage to property are not permissible, whereas I deem them to be, if not merely permissible in fact close to a moral requirement. I often draw parallels between the tactics employed by the suffragettes, the civil rights movement in America and Nelson Mandela's ANC (as well as the ANC's military wing, Umkhonto we Sizwe) and today's 'anti-climate change' environmental activists. Her argument is that the arts are important, and funding them is surely a good thing. If this means accepting money from legal, if slightly unsavoury, bodies then that is a 'necessary evil'. It basically comes down to the question "what is a legitimate form of protest to get an important point across?"