In people, skin colour is controlled by a pigment called Melanin. It is made from an amino acid that is oxidised.
The pigment that makes people dark is chemically the same as the pigment that makes blackberries dark and it is the same as the ink that octopuses squirt when they flee predators.
Every human has this pigment in their bodies except for albino people. Even white people have small amounts of the pigment that make their skin.
Did you know that white people's skin is not white, it's transparent and slightly beige? The white colour you see in white people is actually the fats that are under the skin.
Having a different pigment concentration in your skin does not make you more or less important than anyone else so there should be no reason why people are treated differently than others because of their colour.
