As international ministers arrive in Paris for the final week of the COP21 conference to reach an agreement intended to define the future of human existence on the planet, the climate justice movement is stepping up its critique of the UN climate talks. Meanwhile, climate change deniers are holding a counter conference with the ambition of stopping an agreement, hosted by some of those named as the worst "climate criminals" at COP21 by global advocacy group Avaaz. VICE News talks to Kumi Naidoo, head of Greenpeace, to find out what influence the world’s biggest environmental NGO has over the UN talks, and attends a climate change deniers conference. Watch "Police Clash With Protesters in Paris: COP21 - Climate Emergency (Dispatch 1)" - bit.ly/1OtY25i Watch "Climate Activism Under Attack: COP21 - Climate Emergency (Dispatch 2)" - bit.ly/1REMNbd Watch "Toxic Tours and Civil Disobedience: COP21 - Climate Emergency (Dispatch 3)" - bit.ly/1XWkOsD Read "With Protests Banned in Paris, Climate Activists Embrace Other Forms of Expression" - bit.ly/1NsEEoI Subscribe to VICE News here: bit.ly/Subscribe-to-VICE-News Check out VICE News for more: vicenews.com Follow VICE News here: Facebook: www.facebook.com/vicenews Twitter: twitter.com/vicenews Tumblr: vicenews.tumblr.com/ Instagram: instagram.com/vicenews More videos from the VICE network: www.fb.com/vicevideos