Hate to give you more satisfaction with this than i already have, but i have to debase your 'logic' here. obviously you don't seem to have much experience in the use of this word. Many people use this in a non derogatory sense, and as i had said before this is part of the set of circumstances. It wasn't directed at anyone, meaning it wasn't meant to be racial or derogatory.
From: http://www.urbandictionary.com/define.php?term=nigga
Nigga is a word which evolved from the derogative term "nigger". Tupac best defined the distinction between the two.
NIGGER- a black man with a slavery chain around his neck.
NIGGA- a black man with a gold chain on his neck.
~
yeah, i get it, funny definition from urban dictionary, whatever
-AND-
http://en.wikipedia.org/wiki/Nigga
There is conflicting popular opinion on whether there is any meaningful difference between
nigga and
nigger as a spoken term. Many people consider the terms to be equally
pejorative, and the use of
nigga both in and outside African American communities remains controversial. H. Lewis Smith, author of
Bury that Sucka: A Scandalous Affair with the N-word, believes that "replacing the 'er' with an 'a' changes nothing other than the pronunciation" and the
African American Registry notes, "Brother (Brotha) and Sister (Sistah or Sista) are terms of endearment. Nigger was and still is a word of disrespect." The
National Association for the Advancement of Colored People, a civil rights group, condemns use of both
nigga and
nigger.
so there you have it.