A poster by street artist Aaron Li-Hill as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. Brandalism is a revolt against corporate control of the visual realm. Following on in the guerilla art traditions of the 20th Century and taking inspiration from Agitprop, Situationist and Street Art movements, the Brandalism project sees artists from around the world collaborate to challenge the authority and legitimacy of commercial images within public space and within our culture. (Photo by Benoit Tessier/Reuters)





A poster by street artist Bill Posters, showing a satirical portrait of Britain's Prime Minister David Cameron, as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Climate Games as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Ricardo Cavolo as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Paul Insect as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Bill Posters, showing a satirical portrait of Japan's Prime Minister Shinzo Abe, as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Hannah Adamaszek as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Climate Games as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)





A poster by street artist Robert Montgomery as part of the "Brandalism" project is displayed at a bus stop in Paris, France, November 28, 2015, ahead of the United Nations COP21 Climate Change conference in Paris. (Photo by Benoit Tessier/Reuters)