<human>: Can you provide a brief overview of the text?

I was one of four white kids in my 4th grade class (mostly black school). My black teacher was around 40 years old, overweight, and always mean. (to everyone not just the white kids) one day while teaching a lesson about slavery she kept referring to white slave owners as white devils. Not a big deal to me and my 4th grade brain, but when I mentioned it at home my mother requested a parent/teacher conference and chewed out my teacher for what she said and told the principal on her. Sooooo the next day I got a new nick name in class "Massa" I was "Massa Kleemin" and she called me that for the rest of the school year, but I thought it was cool that I had a title and the rest of the kids didn't. Even my best friend (a black kid) spoke up and requested a title of his own, so she called him "King kleeminsbestfriend."  

Looking back on it years later I had that "oh no way" moment and made me laugh that she was so bold to make slave jokes in front of a bunch of kids and never really got into the trouble.  She also told us that if any white kids said "nigger" we would get detention BUT the black kids could say it.  Again as a kid growing up in a mostly black community I knew I shouldn't say the N word and that the black kids could, but to be told it was a "rule" by my teacher is sad.
<bot>: black teacher made slave jokes to me cause I was one of the few white kids and was too young to realize it.