ブカ島
The Hahalis Welfare Society was a nativist movement on Buka Island, Autonomous Region of Bougainville, Papua New Guinea. The movement began in 1960 and was most active in the '60s and '70s. At its peak, the Society numbered half of the population of Buka Island as members. The Society is best known for refusing to pay the Head Tax to the colonial government of the time, the Port Moresby Administration, and its subsequent clash with police in 1962.