It is an anger against everything that had colluded to prompt those words to a child. The insidious learning of racism which comes about through our friends and families, the films we watch, the stories we hear, the education we get, the line our politicians peddle. Come to think of it, reading about Sandy and Sue Smith every day from our British English textbooks didn't do wonders for my own self-image either. One study has indicated that children as young as three learn to perceive overt ethnic differences and by seven the smallest details of ethnic variation are recognized. Because racism affects both offender and victim, albeit unequally.
Racist societies are literally sick societies.
For the person subject to race hatred, every social interaction can be a reminder. Many of us automatically think of the continued disadvantage and persecution wrought on people of colour by whites. However, the idea of race is not just about the colour of one's skin but also about ethnicity which takes into account physical features, language, religion, ideas of nation and culture. These are the things people use to define themselves as a group. Often when people refer to different races they use now one criterion, now another.