The patterns of behavior from place to place, continent to continent, climate to climate, language to language are remarkably similar. I've spent my whole life reading about this and watching it directly in real-time. It's the hominid version of ecological succession...or like 'old field succession'. Detroit, South Africa, Rhodesia....it's almost comical to see the progression from this Mesolithic lifestyle - then forced into a highly developed or Westernized society - and post colonially, they revert back to their stone-age existence but with distorted defects - mutations caused by their exposure to industrialization that only serve to mechanize their tribal instincts and base impulses. It's abhorent. It's obscene. The conditions in places like urban America absolutely mirror the same in Europe or Africa - they become absolutely Third World in breakneck speed.
When I was a child, we left our front door wide open with just the screen - in Detroit. It was the fifth largest city in the country, one of the most prosperous in the world. That's what drew my hard-working, intelligent and ambitious progenitors to come here from across the ocean. This was during my lifetime. The stores in shops in Detroit had windows...not bars and barb wire. Now it is what it is. That is an absolutely univarsal trend and it is, as I said, identical to ecological succession.
Leftists deny the obvious truth and demand that clear evidence of sub-speciation be ignored for the sake of their political agenda in the same fashion that they demand we believe that ugly, sexually deranged men can magically become women if we all believe. They don't even believe their own bullshit.
This is not a value judgement. It is a anthro-bio-socio- evolutionary reality and it is the fault of Europeans, Asians and Arabs that we are dealing with the fallout of their forced migrations into and out of these absolutely stone aged cultures.
They are stone age, they have the right to be stone aged and there's nothing wrong with that unless your force integration with developed societies and expect them to succeed...as is the case with this promotion of open borders and mass exodus into Western countries. It's purely a disaster for all parties involved. They should have been allowed to remain stone aged or to have remained under the boot of their imperial masters. Either scenario would be preferable to the mutations that have been caused.
Perhaps that is the pennance for slavery.