In the early 1950s the airport was served by the original Frontier Airlines (1950-1986) which flew DC-3's on a route from El Paso to Phoenix that included stops at Las Cruces, Deming, and Lordsburg, NM as well as Clifton, Safford, and Tucson, AZ.
A protected group is a group of people qualified for special protection by a law, policy, or similar authority. In the United States, the term is frequently used in connection with employees and employment.
However, laws are not the only solution to eliminate discrimination. The first step to advocate for the protected class group is to encourage organizations to develop workplace programs that reduce discrimination and racism. In some cases, discrimination and racism result from lack of knowledge in different population groups.