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Drug gangs in Mexico fuel the violent trade in narcotics around the world, affecting populations not just in the Americas, but in West Africa, Europe, Afghanistan and Australia.

The huge revenues from the global operation are used to purchase weapons, ensuring the bloody fighting surrounding the industry continues - leading to further instability in some of the world's poorest countries.

Al Jazeera's Franc Contreras reports from Mexico City.

Source: Al Jazeera