Prosperity is an essential partner in civilization itself. It is the basis of leisure, charity, and a hopeful outlook on life. It is the means for conquering poverty at the lowest rung of society, the basis on which children and the elderly are cared for, the foundation for the cultivation of arts and learning. Crush an economy and you crush civilization.
I describe it as tribalism because they're very tightly woven communities. Lack of civility is part of it, because that's how Internet tribes behave. We see this more and more in electoral politics, which have become increasingly poisonous.