(4) Pushback on the System
Those left out of industrial society or existing on its fringes generate problems often couched as political or social disputes over fairness. Many disputes appear to be similar to opposition to capitalist systems ever since European colonization began, but now billions of people are in this status.
With more material being extracted in less-industrial parts of the world, locals are more resistant. Resistance and corruption can easily turn violent when exacerbated by other social fault lines. A lot more people want a slice of middle-class life; the UN Office of Population Studies has long projected the urban poor as the fastest growing segment of the global population. And many people do not participate in capitalist society because their ancient customs and their legal systems never developed for it.