Some say its “What you sow is what you Reap” or its a cause and effect. to me its some thing which a human mind cannot comprehend. if you ask why? lets take an example of a Lion chasing a deer. to me both are running for their life only the context differs the Lion is running to satisfy its hunger(to be alive) and the deer wants to be alive. when you see this picture of lion chasing the deer what do you feel and what would you want to do? what ever you feel and wanting do says more about you. same way in this drama of life we see many things happening every day our response to each determines the karma its neither good nor bad just karma.