Freegan

New concept: Freeganism.
Definition: Freeganism is an anti-consumerist lifestyle whereby people employ alternative living strategies based on "limited participation in the conventional economy and minimal consumption of resources"
The lifestyle involves salvaging discarded, unspoiled food from supermarket dumpsters that have passed their display date but haven't passed their edible date. They salvage the food not because they are poor or homeless, but as a political statement.
They even have their website: http://freegan.info/
I don't know but it sounds to me that in another time, they would have been called "pique-assiettes" (But maybe I just don't understand the concept).