The Canadian Association Dogwood Initiative advocates for striking oil tanker off the Pacific coast of Canada. This initiative called No Tanker is currently a simple petition. As with any petition, the purpose is of course aware of the government, but for this mobilization must be at the rendezvous. This has led the agency to Rethink puisqu’évolutive landmark creation. Posters made with a special ink – and environmentally friendly – have been placed in the streets of Vancouver. The campaign message appears only when it rains.