In regards to the demographic sheet they wanted you to fill out, I remember in the mid 1990s, when I interviewed, they had the same thing. Also, at the time they needed some pilots in Puerto Rico to fly the 208s. They would not send ME down there despite my speaking fluent Spanish and having studied abroad. Seems they only wanted to put only "native" Puerto Ricans on those routes because they were afraid that "white" guys would have a hard time assimilating with the "brown" locals. (I ended up flying a 208 in Ohio by the way.)
Now, anyone who has spent ANY time in Latin America knows full well what a crock of s**t that is and that you can get along just fine with the locals if you just loosen up a bit, try to speak a little Spanish, dance a little salsa, drink a little rum (tequila in Mexico) and go with the flow. On a personal level, they are not nearly as racist as we think they are.
The problem is, aside from being a good company in other respects, the guys running the show at MAC, and I don't mean this in a bad way, are basically Southern good ole boys. They think cafe con leche is something you put on mashed taters. They think the Merengue is some tropical disease. So, unless things have changed around there, I expect that the demogrphics sheet helps them to maintain the "seperate but equal" practice of keeping "white" people apart from the Spanish speaking "brown" people. That's my theory anyway.