Wikipedia
Autoreduction (based on the French term autoréduction) is an anti-capitalist and collective practice of a group of people to impose a lower price of a product or service until it is free. A group of consumers take upon themselves to reduce the price of some good or service, and act collectively. The targeted service or product is generally considered by activists as being essential and should be available on an equal basis for all people. Critics of autoreduction do not distinguish between this type of practice and criminal theft or robberies.
This action takes various forms of non-payment for transportation or goods in supermarkets. It can result from refusal to include an increase in rent or utilities such as electricity, gas, or water. It may be done with the aim of redistributing goods to those in need.