Many people hate things in their lives leading to hating others. This is dismal to know because having this feeling towards others could be detrimental. Such as destruction of reputation, family, friendship and even killing people are actions might be done. Their are many groups in the community that have been enemies because of hating each other. Best example is religion. Religion is an entity near to god and must be sacred. But there are moral issues within it. Certain religion hates this religion or a religion resents to this sect of it, because of moral and sacramental issues that unacceptable to the first or vice versa. In family, that children hate their parents because of their abandonment and vices. Siblings are in war because of child favoritism. In politics that others are being raised, while others are being dropped. And so on so forth.
What is the only answer to hatred?
They only answer to it is love. As hatred is assault to love. Love should be filled the person with much love so that it can purify him. Love is the only answer. When you know a person who is hating all things in the world, try to show him love. Let him feel the love that he never felt in the past and show him how to love other. Help him out to acquire love. Ask him to attend some counsel, good talks and advice. Teach him to be near to God and that nothing in this world is better than to love and at peace.