The adoption of liberal economic reforms by the Mexican federal government clashed with the leftist political ideals of these groups, notably as the reforms were believed to have begun to have negative economic effects on poor farmers, especially small-scale indigenous coffee-growers. Opposition would coalesce into the Zapatista movement in the 1990s. Although the Zapatista movement couched its demands and cast its role in response to contemporary issues, especially in its opposition to neoliberalism, it operates in the tradition of a long line of peasant and indigenous uprisings that have occurred in the state since the colonial era. This is reflected in its indigenous vs. Mestizo character. However, the movement was an economic one as well. Although the area has extensive resources, much of the local population of the state, especially in rural areas, did not benefit from this bounty. In the 1990s, two thirds of the state's residents did not have sewage service, only a third had electricity and half did not have potable water. Over half of the schools offered education only to the third grade and most pupils dropped out by the end of first grade. Grievances, strongest in the San Cristóbal and Lacandon Jungle areas, were taken up by a small leftist guerrilla band led by a man called only "Subcomandante Marcos."