http://www.nclr.org/ source located by Johnnie R. Blunt
Founded in 1968, the National Council of La Raza (NCLR) is the largest national Hispanic civil rights and advocacy organization in the United States. NCLR works to improve social, political, and economic conditions of the fastest growing minority groups in the country: the Spanish-speaking diaspora from Mexico, Central and South America.
To achieve its mission, the NCLR conducts applied research, policy analysis and political advocacy. Its website provides crucial program information on key issues: Civil Rights, Immigration, Education, Employment, and Health.
I heard of the La Raza when I lived in New Mexico. For some, this organization has a very "radical" agenda: to liberate many Hispanics from the domestic labor pool (housekeeping/gardening) and racially insensitive immigration policies to to full equity with other U.S. citizens. However, the website seems to present an ethically and financially responsible non profit organization that shares its annual report online.
As an information professional, I would definitely recommend this site to my Hispanic patrons and to others who need information about Hispanic civil rights movement in the United States.