Beauty is also about ethnicity, for most people "white is beautiful" even for minorities. In Mexico mejorar la raza is a common phrase which means ‘improve the race.’ It implies that you should marry or have children with a whiter person so you’ll have better-looking kids. The phrase is used by people of any race without much thought.
If you watch Mexican soap operas only the actors who play the help or criminals look hispanic/latino but all the other actors are white.
Yes, all lives matter but for most jobs those who look whiter are more likely to get hired even in cultures where there's a vast majority of non whites.