There's a high percentage of the population in our country who are afro-descendents. However, in ancient times, people with darker skin were taken as slaves, which has made it difficult for them to be able to be considered an equal to people with lighter skin. Even though nowadays it's not like that, at least in most cases, they have problems because of racism and, of course, racists. In Colombia it's not seen in large-scale, but it is still something you would probably see in some places.
In conclusion, we all should do something about it: they're human beings, not monsters. So next time you see an afro-descendent you should just treat him/her the sameway you would like to be treatedd.