The Comic book The Magic of Responsibility is the result of joint work between communities affected by the Cerrejón coal mine and various international solidarity groups, who participated in July 2019 in the regional public hearing “Diversion of the Bruno stream and the humanitarian crisis in La Guajira” and the visit to monitor and assess the diversion works of the Bruno stream, in La Guajira, Colombia. The diversion had been carried out by mining company Carbones del Cerrejón. The multinational mining companies Anglo American, BHP and Glencore are the total owners of Cerrejón, each with 33.3% of the shares. The public hearing coincided with the Witness for Peace Delegation led by the academics Aviva Chomsky and Steven Striffler. Many US students participated in the delegation alongside members of the international organizations ASK! from Switzerland, Re: Common from Italy, and London Mining Network and Colombia Solidarity Campaign from the United Kingdom.