U.S. Equal Employment Opportunity Commission prohibits employers from engaging in intersectional discrimination. The following paragraph describes a case.

Ava, who is a Mexican American woman, was denied a promotion to a team leader position at the company where she successfully worked for 10 years. Ava is qualified for the team leader position but she was rejected three times for the promotion, without explanation. Ava alleges that she was denied the promotions because she is a Mexican American woman. She claims that two non-Mexican women and a Mexican man were selected for the three positions and that the company has never promoted a Mexican American woman to team leader in its 20 year history, even though Mexican American women have constituted about 20% of the line staff from whom team leaders are typically drawn. Ava's charge of discrimination should assert race, national origin, and sex discrimination. (www.eeoc.gov)

Explain why this case of discrimination should be given special attention, using the theoretical concept of intersectionality.