Yes, protecting minority rights is a good thing as protecting all rights for all people is a good thing. People all deserve to be treated with respect and dignity, as all people are human beings. For minority groups, too often their rights are trampled upon, so it is doubly important to make sure they maintain their rights.
Minorities (such as Hispanics) in this country have the potential to be discriminated against. Protecting their rights would ensure that they receive equal treatment, and cannot be denied rights to employment, etc. Simply because they have a foreign name or birthplace. As for gays, the repeal of Don't Ask, Don't Tell was a crucial step forward in the acceptance of alternative/"non-traditional" sexual orientations in modern society.