Rainbow flag Alliance (ICA) designed an international co-op symbol and a flag for the first "Co-operators' Day," which was held in July 1923. After some experiments with different designs, a famous French cooperator, Professor Charles Gide, suggested using the seven colours of the rainbow for the flag. He pointed out that the rainbow symbolized unity in diversity and the power of light, enlightenment and progress. The first co-op rainbow flag was completed in 1924 and was adopted as an official symbol of the international cooperative movement in 1925. In 2001, the ICA's official flag was changed from a rainbow flag to a
Legend of the Rainbow Warriors the world how to have love and reverence for Mother Earth, of whose very stuff we human beings are also made. "Warriors of the Rainbow" relates these fictitious "Indian" prophecies to the Second Coming of Christ and has been described as purveying "a covert anti-Semitism throughout, while evangelizing against traditional Native American spirituality." The book "The Greenpeace Story", states that Greenpeace co-founder Bob Hunter was given a copy of "Warriors of the Rainbow" by a wandering dulcimer maker in 1969 and he passed it around on the first expedition of the Don't Make a Wave Committee, the precursor of Greenpeace.