The human race can live in harmony, humans are the greatest creation of God. When God made humans, He didn't make divisions. It is the humans who are over centuries discriminating certain groups and classes on the basis of their religion, caste, and gender. If humans can create divisions they can break them too. Now that depends on what kind of values and virtues one believes in. If we have the right Guidance and directions we will surely overcome this indifference and discrimination. What is left is to work on our virtues and abide by the constitution to end the caste distinctions and lead a happy life and make it happen for others too.