It's nothing different that in other countries, just that we are not used to them either. For example the best Brazillians footballers are always almost comes exclusively from the poor black population. Only some from the higher elites whites have been involved, the most famous one is obviously Kaka.

Even in England, most of their football players comes from the lower income group, which is why years ago there was a stigmata against them, citing that they are usually rowdy, unlearned people. Only recently does this does not apply anymore.