I suppose it would only make the spittle fly faster if you asked them to read the US Census statement about Hispanic Identity:

Hispanic Identity

Since the 1970 Census, the questionnaire has asked U.S. residents whether they are of Hispanic origin, and if so, which broad Hispanic group they identify with. Hispanic origin is considered separately from race in the Census—and Hispanics may identify with any race. As the largest and fastest-growing ethnic minority in the United States, the information about Hispanic origin is of growing importance. It is used in numerous programs and for monitoring equal employment opportunities.