LYON, FRANCE - DECEMBER 17: Greenpeace activists take part in a 'punch' action, held in different supermarkets to protest against the environmental policy of French tin producing company 'Petit Navire' on December 17, 2016 in Lyon, France. By taking all 'Petit Navire' tins from the supermarkets counters, Greenpeace militants wanted to sensitize consumers to the necessity of a responsible fishing policy and a respectful attitude on behalf of fishermen and fishing companies towards ocean life. (Photo by Serge Mouraret/Corbis via Getty Images)

LYON, FRANCE - DECEMBER 17:  Greenpeace activists take part in a 'punch' action, held in different supermarkets to protest against the environmental policy of French tin producing company 'Petit Navire' on December 17, 2016 in Lyon, France. By taking all 'Petit Navire' tins from the supermarkets counters, Greenpeace militants wanted to sensitize consumers to the necessity of a responsible fishing policy and a respectful attitude on behalf of fishermen and fishing companies towards ocean life. (Photo by Serge Mouraret/Corbis via Getty Images)