Well if you look at it in the past, the european/americans probably started slavery cause they thought that the africans were a lower race. This decision was based on what they saw africans, they were hunters, and appeared to be savages due to how they ate, and did things. Though they were not entirely savages, the rituals they performed for manhood and womanhood were, and some still are, bassed on how fit the singular person was for the life of an adult, in our society we base this descision on age, but in all honesty this system is so flawed, some are ready before that age, others are never ready, some aren't ready till thier forty.
The africans rituals were tough to do, but if one did go through it without incident, you were a man or woman from that point on, for you had proven yourself capable of facing the facts of life and staying with it.
For instance one tribe that still practices these such rituals, they seem brutal in most eye's in mine they are majestic, not for the pain and suffering, but for what they stand for. The women of the tribe get thier hair pulled out strand by strand, one at a time, then they stand in a cave for however long that is necisary, without food, and with the women of the tribe and the other female children that are to try and pass it, the women of the tribe decide who is ready and who isn't ready for womanhood. The men on the other hand stand in a line with the others and their hands in woven gloves, but these are no ordinary gloves, red fire ants are woven into the gloves during the weaving process, these insects are feared by man and beast alike in these villiages. They stand there for a few days, I could e mistaken it's been a while, during this time the boy is in a trace like state, due to the fire ant bites.
After the above rituals girls are considered women, and can now marry and have children, boys are men and can marry and have a house of thier own.
In another tribe the boys need to get a tattoo to become a man, don't laugh it's not as simple as going into a tattoo parlour and getting one, they have no anesthetic, and no electricity, the tattoo is given using inks and a sharp chisel like object, and a hammer, the design is carefully tapped into the flesh, and is highly painful. In this case the boy is not a man unless he goes through the whole proccess, many fail the first time.
You may think I'm cruel for mentioning the above but I needed a standpoint for my opinion.
Personal I don't believe any race to be superior, especially not the european, as they have no respect for the world around them, if it's land they can dig it, and build it, yes their are african americans and even some africans that have this opinion but they wouldn't had the european man not infuenced thiers.
If any race is superior it is the african, as their skin is designed not for just the cold tempatures our are, but the hot humid ones of the jungles as well.