Beware the avocado mafia in Mexico | Letters

The only people who gain are those who market the avocados abroad, and the political organisations associated with them, says Charles PosnerYour article (Taco alarm bells ring as avocados go out of reach for Mexicans, 7 August) misses the point about what is the nature of the problem and who is responsible. A farm in the west of Mexico that I owned until a few years ago simply could not get its product on the market because the commercialisation is controlled by mafias, including local political