Feeling excluded from these new projects, the lower classes took ownership of their own democracy through a revitalization of social movements in Latin America. Both urban and rural populations had serious grievances as a result of the above economic and global trends and have voiced them in mass demonstrations. Some of the largest and most violent of these have been protests against cuts in urban services, such as the Caracazo in Venezuela and the Argentinazo in Argentina. Rural movements have made diverse demands related to unequal land distribution, displacement at the hands of development projects and dams, environmental and indigenous concerns, neoliberal agricultural restructuring, and insufficient means of livelihood. These movements have benefited considerably from transnational support from conservationists and INGOs. The Movement of Rural Landless Workers (MST) is perhaps the largest contemporary Latin American social movement. As indigenous populations are primarily rural, indigenous movements account for a large portion of rural social movements, including the Zapatista rebellion in Mexico, the Confederation of Indigenous Nationalities of Ecuador (CONAIE), indigenous organizations in the Amazon region of Ecuador and Bolivia, pan-Mayan communities in Guatemala, and mobilization by the indigenous groups of Yanomami peoples in the Amazon, Kuna peoples in Panama, and Altiplano Aymara and Quechua peoples in Bolivia. Other significant types of social movements include labor struggles and strikes, such as recovered factories in Argentina, as well as gender-based movements such as the Mothers of the Plaza de Mayo in Argentina and protests against maquila production, which is largely a women's issue because of how it draws on women for cheap labor. The 2000s commodities boom caused positive effects for many Latin American economies. Another trend is the rapidly increasing importance of the relations with China. With the end of the commodity boom in the 2010s, economic stagnation or recession resulted in some countries. As a result, the left-wing governments of the Pink Tide lost support. The worst-hit was Venezuela, which is facing severe social and economic upheaval. The corruption scandal of Odebrecht, a Brazilian conglomerate, has raised allegations of corruption across the region's governments (see Operation Car Wash). The bribery ring has become the largest corruption scandal in Latin American history. As of July 2017, the highest ranking politicians charged were former Brazilian President Luiz Inácio Lula da Silva (arrested) and former Peruvian presidents Ollanta Humala (arrested) and Alejandro Toledo (fugitive, fled to the US). The following is a list of the ten largest metropolitan areas in Latin America.