Chloé Sublet and Léa Renault, participants in the Tax Their Billions campaign by 350.org, advocate for billionaires to pay their fair share for climate solutions. The campaign has influenced public opinion in France towards taxing extreme wealth to fund environmental action, emphasizing the need for accountability and a just transition. 350.org encourages followers to join their climate movement for a safe and equitable future, highlighting the power of ordinary people coming together to push boundaries in the fight against climate change. Climate justice, according to Chloé and Léa, can only be achieved when responsibility is placed where it belongs.