You shouldn't criticize other people based on their race.
Abby has a student who is being disruptive in class.
Abby wants to address the behavior with the student.
Abby calmly tells her student that this behavior is not appropriate for class.
Abby tells her student that only black people behave this way.
Abby convinces the student to behave and the class continues successfully.
Abby loses her job for the inappropriate comment.