Wars, robberies, murders and other crimes are the cruel and inhuman side of people. Think about it, humans, being inhuman! However, there is another side to the coin. One of the mysteries of man is his desire to be interested in his fellow man and take care of him.
There are people sending help to other people in need in other parts of the world. They want, thereby to alleviating hunger, cure diseases, help those in their time of need and often in catastrophic circumstances.
Jesus told His disciples that they were the salt of the earth and light of the world. This brings a special responsibility over Christians; to take care of others. The gift of caring for others comes from God and reflects his will.
Jesus transmits the power of the energy that transforms a selfish humanity with no regard for others and cruel, in people who are genuinely interested in his fellow man, interest that leads to action.
The true disciple of Christ lives to serve. This is natural in life, where selfishness was defeated by the grace and love of Christ.