The world's biggest anti-advertising campaign is trying to 'take over' Paris with provocative fake ads

The Paris climate talks, which began Monday and bring together more than 150 world leaders, are aimed at finding solutions to curb the rising levels of pollution, cut dependency on fossil fuel, and halt the ensuing rise in temperatures.

The talks are facing protests on multiple fronts. One vibrant series comes from the London-based anti-advertising campaign Brandalism, which has denounced the "corporate takeover of the COP21 climate talks."

Brandalism is displaying its displeasure with the talks by inundating the French capital with more than 600 "fake" advertisements that were installed in advertising spaces all over the city.

The campaign claims it "has worked with Parisians to insert unauthorized artworks" across the city and that the fake ads were placed in spaces owned by JC Decaux, the biggest outdoor advertising company in the world. The artworks were created by over 80 artists from 19 countries.