NAIDOC originally was an acronym for the National Aborigines and Islanders Day Observance Committee.The organising committee behind the day adopted this name in 1991. However, the idea behind NAIDOC goes back to a letter written by William Cooper that was aimed at Aboriginal communities and at churches. It was written on behalf of the Australian Aborigines Progressive Association, an umbrella group for a number of Aboriginal justice movements. The association gathered together a wide circle of Indigenous leaders including Douglas Nicholls, William Ferguson, Jack Patten and Margaret Tucker. In 1937 they were preparing for what would become the famous Day of Mourning in 1938. It not only sparked a very effective one-off protest. It also stimulated a national observance that was at first championed by churches, and is now a national celebration: This years NAIDOC week was celebrated with a march from Victoria Square to the South Australian Parliament House and speeches at the door step to the parliament house. This was followed by the family fun day back at Victoria square, where there were stalls, games, music, food and other activities. Though it rained sporadically,it didn't dampen the spirit of those who turned out to celebrate NAIDOC family fun day.