you should care because of their surge in the population.
the closest competitor right now for black people when it comes to getting jobs is hispanics...once however many millions are legalized, thats even more competition for low class and middle class black folks in the job market. When you consider the fact that the job providers by and large are still going to be white people due to them owning most of the wealth and the whites preferring hispanics over blacks, you have a dangerous recipe. The hispanics are probably going to be the managers in places that are white owned and if they dislike blacks as i suspect, thats less black brothers and sisters getting hired....this would surely start creating conflict between blacks and browns while the whites sit back and laugh.