I think that is really insightful and mature of you to reach that conclusion at such a young age. What you just talked about is one of the three poisons as well as its opposite, jewel, of Buddhism. Racism, and hatred or anger and fear, exist because of the lack of knowledge or Ignorance. Through Wisdom, or knowledge, one can eradicate fear, hatred, and anger, and Racism. I don't know if knowledge will spread like fire, if people are not conditioned to learn, but it is vital to pass information, knowledge, and love from generation to generation; for example our genetic codes are information which we pass on and on. If we don't pass on information, the next generation and many after wards will have difficulties until they regain their balance.