Racism on Chan Boards

What the hell is with all the racism on these chan boards?  All I see is "nigger" this and fucking "nigger" that, and "LOLS nigra!"  What the hell?  What is wrong with these retarded people?  Are most people here racist or something? 

I need this explained to me, really I do.  Do chan frequenters really think black people are inferior, or is it some other kind of messed-up inside joke I just don't get? 

It's simply not good to engage in, or encourage racism, regardless of how prevalent it is.  Lots of people like to go to Cambodia and have sex with children.  Does that mean we should all hop on a plane and go have us a pedo-tastic sexcation in Southeast Asia?