Why do black people call each other brother/sister?do they all have the same dad?

Question

Why do black people call each other brother/sister?do they all have the same dad?

Answer 1

ignorance is bliss isn't it?

Answer 2

wow!!! you sound ignorant.  And no they are not REALLY brother and sister it just means that they are close friends.  

Answer 3

wow this sounds like quite a joke but really it just developed way back into slavery days. you have a whole race of ppl who werent considered unified by the whites and whatever but they were unified with eachother.. they stuck together and most likely hence the phrase " my brother, my sister, a brother, a sister" its really not that hard to comprehend or understand! my answer may not be all that right but in other words this is what I feel.