Answer:
"Blaxicans" And Other Reinvented Americans, is an essay written by Hispanic-American Richard Rodríguez and it literally analyzes the effects of racial discrimination, multiculturalism understood as a way of division and differentiation, and the labeling that originated through the ideas of positive action, minorities, and other such acts, given ethnicity and racial characteristics.
Rodriguez, in his essay, speaks then about the origin of America as a country of immigrants, and how as time goes by, these immigrants become part of the "original group of Americans", but then, this becomes just for two groups: African-Americans, and White-Americans of European origin. Other groups are left behind and are clustered into what is known today as ethnic "groups". In his case, he speaks about his own group, the Hispanics, even though he was born in America. Rodriguez explains that it was after the 1970´s, with Richard Nixon, that other such minority groups, aside from African-Americans, appeared and were labeled.
When he uses words such as "gringo contrivance", "theme houses", and such terms, its because Rodríguez is explaining that he, and others like him, due to their race, their color, their ethnicity, have been grouped into the minority of "Hispanics" and they have been differentiated from the "original Americans" because of the use of such terms that were born from English-speaking Americans who accepted "diversity" but did not wish to mix with it. These terms are not known by people born in Latin America, they have learned it from English speakers, but they have become almost a badge of honor for those who, like Rodríguez, feel honored to be of Hispanic descent.