On patrol with Mexico's avocado police

If you enjoy an avocado, it’s likely to come from Mexico, the world’s biggest producer of the green stuff.

As demand for avocados has soared in places like the US and Europe, the industry’s become very lucrative for Mexicans, but it’s also been targeted by drugs gangs.

And, in the heart of Mexico’s avocado plantations, some producers have wrested control back from the criminals.