Any problem has a solution.The problem can be solved if it is viewed with a broad mind.Make them to stop the thinking of hierarchy,egoism,selfish deeds.
Just think about the problems of Earth.Environment is getting depleting.Many problems are already faced by many areas of world.
With that all problems what is the need for going to wars and wasting energies.
By investigating that energy in making good things,Our world will become a peaceful one.It would be a great work which result in happy world.