First, some basic facts:
All About Mexico
Indigenous peoples account for 30 percent of the population, and people of European ancestry, primarily Spanish, account for about nine percent of the population.
Ethnicity and Language
If an indigenous person can become a mestizo, who, then, is an Indian? Anthropologist Alan Sandstorm lists minimum criteria that compose a definition of Indian ethnicity. According to Sandstorm, an Indian is someone who identifies himself as such; chooses to use an indigenous language in daily speech; remains actively involved in village communal affairs; participates in religious ceremonies rooted in native American traditions; and attempts to achieve a harmony with, rather than control over, the social and natural worlds. Should one or more criteria become absent over time, the individual probably has begun the transition to becoming a mestizo.
Although mestizos and Indians may both reside in rural areas and have relatively comparable levels of income, they maintain different lives. Such differences can lead to highly negative perceptions about each other. Mestizos often contend that Indians are too unmotivated and constrained by tradition to deal appropriately with the demands of modern society. Indians, in turn, frequently complain that mestizos are aggressive, impatient, and disrespectful toward nature.
For more on the subject, see "Most Mexicans Are Indians" and Hispanics Have Native Roots.
Below: Latinos or Indians?