Question

How do we prevent future genocides?

Answer 1

This is not a school question, is it? You are trivializing genocide. The way to do what you are asking, though, is to become informed and do well enough in school so that you can become a political scientist of historian, so that you can have a real voice and be heard and influence people. Start by googling the Armenian genocide. No, start by trying to answer why it's wrong to say what you just said. Look the word up.