Activists and left-wing leaders concluded at a meeting in Bolivia that big polluting countries need to aggressively reduce greenhouse gases and consider input from smaller nations in order to combat global warming. The gathering aimed to provide a platform for countries and environmental groups that felt excluded from the Copenhagen summit, where major decisions were made behind closed doors. Activists argue that industrial powers derailed the Copenhagen summit by failing to commit to significant cuts in emissions, and are calling for a more inclusive approach at the upcoming climate change meeting in Mexico. The summit in Cochabamba proposed a 50 percent reduction in emissions by leading industrial nations, a more ambitious target compared to the Copenhagen Accord's promises of 7 to 16 percent cuts. Bolivian President Evo Morales emphasized the importance of listening to the voices of the people and making decisions that benefit everyone at the Mexico meeting in December. During the summit, Morales sparked controversy by suggesting that consuming hormone-fed chicken can lead to "sexual deviation" in men, and that European men lose hair because of their consumption of genetically modified food. The World People's Conference on Climate Change and the Rights of Mother Earth, attended by 20,000 environmentalists and representatives from 90 governments, focused on issues such as capitalism, genetically modified food, and global warming. Indigenous groups from around the world participated in the event, which took place in Tiquipaya and featured various activities such as concerts, theater, and an arts market. Countries like Bolivia, Venezuela, Cuba, Nicaragua, Ecuador, Sudan, and Saudi Arabia, known for their leftist stance, have been vocal critics of the Copenhagen accord, arguing that climate change disproportionately impacts southern nations despite being caused by northern countries. Canadian author Naomi Klein stated that if people recognize the importance of justice and decency, it signifies that countries in the southern hemisphere are not simply seeking aid. She believes that the Cochabamba meeting could strengthen cooperation among nations facing the impacts of climate change, leading to a more united front among developing countries. The meeting concluded with a resolution to establish an international tribunal to hold responsible parties accountable for global warming, as well as proposing a global referendum on climate change and the creation of a fund to assist nations dealing with its effects. The resolutions are not mandatory, but countries and social organizations that participated in the summit have committed to promoting them prior to the United Nations summit on climate change in Cancun, Mexico in December. Alicia Barcena, the top UN representative at the meeting, acknowledged on Tuesday that grassroots groups were excluded from the Copenhagen summit and expressed doubt about the effectiveness of the Cancun summit. She suggested that the Rio+20 Earth Summit on Sustainable Development in Rio de Janeiro in 2012 should be the ultimate goal.