Even as countries cobble together an agreement in Paris to curb climate change, their actions are still being influenced by some of the world’s worst polluters. Fossil-fuel companies have been a surprisingly visible part of this summit.

So activists are trying to hold one of the world’s greatest climate criminals accountable through a People’s Trial of Exxon, a trial to highlight what Naomi Klein calls “the climate crime of the century.” In this conversation with Mediapart’s Jade Lindgaard, Klein explains some of the ways activists are putting pressure on the real actors of the climate change game.