Some people here believe that tribes are organisms which I strongly disagree with. The idea of a tribe as an organism is to consider a tribe to be a multicellular organism and each individual in the tribe as a cell.
The reason I strongly oppose such an idea is that it ignores several key facts:
1.If a multicellular organism is considered to be analogous to a society then it is a very cruel one. Cells in a multicellular organism are frequently killed by other cells due to them getting infected by viruses, are too old or simply they are simply supposed to die (see https://en.wikipedia.org/wiki/Programmed_cell_death
). A multicellular organism is more cruel than Third Reich, Soviet Union, ISIS and North Korea combined since even such entities do not breed people who are supposed to die at a certain age or kill most senior citizens due to their ages.
2.In a multicellular organism there is not a lot of autonomy for each cell compared to that for an individual in a society. Free citizens/subjects (or even slaves) of the most oppressive regimes still have more freedom compared to a cell which usually can not even move away from other cells.
3.Interests of the society should be the sum of interests of its members. There is no inherent reason why a tribe has to exist other than to protect, organize and help its members. If interests of individuals of a tribe improve when the tribe is disbanded then it should just disband. Nobody should ever die for abstract concepts such as tribes because human lives are certainly worth much more than labels.