The occupation of the Hambach forest took place in 2012. An event in which activists built and lived in treehouses to defend the last few acres of forest from the Hambach lignite coal mining operation ongoing in Northern Germany.
In my research, I unexpectedly came to find that Lignite coal is one of the most toxic pollutants to human health. It is considered one of dirtiest forms of coal. Yet, it is used to make fertilizer for food. So the paper plates are made with articles talking about the health dangers of lignite (with the irony that we grow our food in it), and the plate is lifted like a treehouse - symbolizing our reliance on forests, and to symbolize the actions of the activists to stop lignite mining.