"Being covered in white paint, you demonstrate behaviour intended to create a public nuisance, which did in fact cause offence to members of the public, and created a breach of the peace and public order."

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Even in chimps there is true altruistic behaviour; behaviour that doesn't fit into the sociobiological model that says you either help a close relative and thereby your own genes, or you help somebody else now in return for their help in the future. When a very high-ranking male chimpanzee rescues a little orphan, saving his life, that kind of explanation doesn't work.

— Jane Goodall