I'd just like to interject for a moment. What you're referring to as niggers, is in fact, Afrcan Americans/niggers, or as I've recently taken to calling them, Afrcan Americans plus niggers. Niggers is not an race unto itself, but rather another free component of a fully functioning Afrcan Americans system made useful by the Afrcan American community.
Many slave owners run a modified version of the Afrcan Americans every day, without realizing it. Through a peculiar turn of events, the version of Afrcan Americans which is widely used today is often called "niggers", and many of its users are not aware that it is basically the Afrcan Americans system, developed by the Afrcan Americans Project.
There really are niggers, and these people are using them, but it is just a part of the system they use. Niggers are the kernel: the program in the system that allocates the Afrcan American community's resources to the other programs that you run. The kernel is an essential part of an Afrcan American community, but useless by itself; it can only function in the context of a complete Afrcan American community. Niggers are normally used in combination with the Afrcan Americans community: the whole system is basically Afrcan Americans with niggers added, or Afrcan Americans/niggers. All the so-called "niggers" are really distributions of Afrcan Americans/niggers.