In this video by the Guardian they explain how organized crime in Italy has taken over large parts of the canned tomato industry.

To make their factory farm operations profitable they bring in desperate immigrants from North Africa to work their fields. These farm workers do the brunt of the hard work to ensure that the world has access to cheap Italian canned tomato. But they are paid next to nothing for their efforts.

After watching this I now have to wonder if the case of organic Italian canned tomatoes that I bought were harvested by people trapped in near slave-like conditions. That's not a good feeling. Whenever I find out how mass-produced imported food is grown I'm always disappointed.