I am not sure it is helpful to look at tribalism in this way in the Afghan case.
From the theatlantic.com
I think that outburst was an unintentional sidestep into that kind of tribalism.
From the nzherald.co.nz
As the article makes plain it is not community religion promotes, but tribalism.
From the scienceblogs.com
By much the same token, what does left-right tribalism have to do with anything?
From the guardian.co.uk
In much of the country it is entwined with older struggles rooted in tribalism.
From the economist.com
I used to love going to Molineux even without the rude songs, tribalism and fear.
From the expressandstar.com
The streaks of white paint on the Europeans'faces say much about their tribalism.
From the au.news.yahoo.com
Their eccentric ideology is mingled with a curious form of messianic tribalism.
From the time.com
Anglo-Saxon England was a nation at that point bound by tribalism, kinship etc.
From the en.wikipedia.org
More examples
The state of living together in tribes
The beliefs of a tribal society
The social structure of a tribe can vary greatly from case to case, but, due to the small size of tribes, it is always a relatively simple structure, with few (if any) significant social distinctions between individuals.
Tribalism is the second compilation album by Enter Shikari released on February 22, 2010. The album contains two brand new tracks, b-sides, remixes and live tracks. A limited edition version of the album was released in a boxset package also containing a sticker, poster and badges. ...
Tribalistic is a compilation of tribal house, conga and bongo music released by LoveCat Music. The music was produced in Milan, Italy at the underground studios of Dieffe Music. All tracks were written by Bergsenson except 14 written by A. Franchi, D. Torrente, and M. Gulino. ...
(Tribals) Adivasi is an umbrella term for a heterogeneous set of ethnic and tribal groups believed to be the aboriginal population of India. They comprise a substantial indigenous minority of the population of India.
The use of this term must be understood against the assumption that citizens of the modern world would develop significant identification only with large groupings which included a plurality of social categories. ...