The Great Global Tribe 1

Once they had populated the entire earth, human beings created colonies in which to live, which they called cities. 
These are artificial landscapes created by invention and culture, supposedly designed to meet the needs of Homo sapiens.
The most advanced countries are proud of their great cities, in which science, technology and commerce are concentrated.

Several generations of human beings have now been born and have grown up in this man-made environment in which they feel safe because everything is for sale - if you can afford it. 
The victors of the system have increasingly broken their biological links and believe themselves to be free from their limitations as primates.

But the system also has its losers. In order to feed these great urban monsters, an enormous supply network has been created, covering the entire planet. In the new jungles of concrete and glass live millions of neo-carnivores who demand provisions each day and will accept no failure in the supply chain. 

We use enormous quantities of energy of all types, a deadly sin in the wild, where we developed as a species. 

Our animal nature often can take it no longer, and needs to get away, see a tree, do some physical activity, return to what we really are. 
The Great Global Tribe has conquered all others.
We have gone too fast, our success as a species has been such that not everyone can keep up. So-called modern civilisation waits for no one. Natural selection has been transformed into social selection, while the old clans now have the names of banks. 
The dominant social current takes no prisoners; you are either part of the system, or you are an outcast, living at the margins.
The price is starting to become too high, the side effects are all too frequent: somewhere along the line, we perhaps lost our way.
On our planet, there are many ways of living on the edge, and many circumstances which create beings with their own rules. 
Fortunately, now in the 21st century, there still remain some human populations whose way of life corresponds to the original forms of their ancient culture. 
These are the Himba, an ethnic group of nomadic herders in the Kalahari desert, Namibia. 
They are victors, survivors who have conquered the desert and hunger. But they live outside the dominant culture, beyond the control of those who consider themselves to be “civilisation”, and so have become outcasts. The strange thing is that they have not changed in hundreds of years, it is the world that has changed around them.  
They conserve their own attitudes and customs, a different way of seeing the world. They have always been there, but, without wanting to, they have become a curiosity for the “great global tribe”, which considers them a picturesque ethnic rarity.

Only a handful of ethnic groups like the Himbas still survive in the world, and it is almost certain that sooner or later they will disappear as a culture. They have been left undisturbed because they live in an inhospitable, poor environment, but at any moment a multinational will discover something beneath their lands, or perhaps they will be influenced by the tourists, or a road will have to pass that way.
For the moment, the Himba remain alive as a culture; in this case, their marginalisation is voluntary, and we can only hope it will remain that way for the foreseeable future.