Volkswagen, Air France and Mobil are among a number of corporate brands under fire from climate change activists in a series of damning ads installed throughout Paris to coincide with the COP21 climate change talks. The ads are part of the Brandalism campaign, an anti-advertising movement which takes over advertising spaces in cities throughout Europe to challenge authority and criticise perceived wrongdoing. The artworks were placed in advertising spaces owned by JCDecaux, one of the talks' sponsors.