They have a hesitancy to speak the names of the dead, particularly by relatives of the deceased. Villages often split, dissolve or move, every three or four years for a variety or reasons. The village might become too populated or noisy for some of its inhabitants and they start another community. Feuds might erupt and separate villages, or a group might merge with another village for protection against raids. The village moves when someone dies, particularly a man.
Leaders lead by persuasion, example, and consensus.
People follow a leader because they want to, not because they have any real authority. Villagers have the final decision to respond to a leader's wishes or not. The treatment of the Yanomami by the Venezuelan and Brazilian governments has been fraught with the usual bickering and political and agendas. In 1991 Venezuela established the Biosphere Reserve of the Upper Orinoco-Casiquiare, the largest such area in the world. The decree establishing the Reserve placed it under the authority of the Ministry of the Environment and Renewable Natural Resources, and called for the establishment of a management committee to regulate affairs within it that would include representatives from the Indian groups living in its boundaries.