[PhDiva]

Chicano is a term for Mexican Americans that became popularized during the Brown Pride Movement of the 1970's in the US. It's a term used by Mexican Americans to reclaim their ability to name themselves instead of having a name imposed on them by white society.

See below for further explanation:
Chicano is used only of Mexican Americans, not of Mexicans living in Mexico. It was originally an informal term in English (as in Spanish), and the spelling of the first recorded instance in an American publication followed the Spanish custom of lowercasing nouns of national or ethnic origin. However, the literary and political movements of the 1960s and 1970s among Mexican Americans established Chicano as a term of ethnic pride, and it is properly written today with a capital. ·While Chicano is a term of pride for many Mexican Americans, it remains a word with strong political associations. Since these politics are not necessarily espoused by all Mexican Americans, and since usage and acceptance of this word can vary from one region to another, an outsider who is unfamiliar with his or her audience may do well to use Mexican American instead