Lice start off as nits and are very small eggs. When hatched they can become small and narrow. It is possible for them to look black to the naked eye. If the bug is not lice there is a chance that it is a bed bug. They can also look black to the naked eye though their bodies are actually a dark brown.
I am also sorry to inform you that anyone can get lice. Lice are not racial specific, but instead habit specific. A person that has lice can comb their hair and pass it on to anyone that uses that same comb within a few minutes. Lice live in hair. Now, there is a potential that if you use certain products in your hair you can kill the lice before they even begin to get settled.
There are non-prescription shampoos that can kill lice. Some of these same chemicals can be found in hair products. People can stay away from lice by washing their hair and making sure to comb it often. A good indication that you have lice is that your head will itch and you may see red bumps on the scalp, neck and shoulder from their bites. You may also feel a tickling in your hair. If you are not experiencing any itching or red bumps you probably do not have lice or bed bugs. It is a good idea to get a doctor to diagnose your bug problem, though.