You know, the exact same thing is true for zebras and our own world’s equivalent.  
So? It’s fine to joke about a southern accent, now is it?  
Okay, you all know who sounds absolutely uneducated when they speak? Blacks.
 
After over a century of freedom and blacks still haven’t managed to figure out just how to wear clothes, speak nor behave themselves properly.
 
Dilarus, you need to make a follow-up to this comic, in which Sparkles is conversing with a zebra, MLP’s version of a black, about its obvious lack of intelligence as demonstrated by its unbelievably poor language skills.