HELP PEOPLE

          A few years ago, John waas walking on the street, and he saw someone suspicious. A man was chasing an elderly woman. After a while, he heard a scream. He turned around and he saw that the man had already stolen the elderly woman's bag. He didn't worry so much about it.
          A few days later, he saw the same man waiting in a queue of a supermarket and he knew, what was going to happen, but he didn't do anything for help. Then, someone stole the wallet of a man. the police asked to the clients of the supermarket If they had seen something but John didn't say anything.
          A few weeks later, the same situations happened, that one of the persons was John.
          John would like someone to help him to prevent the robbery. He had never helped anyone, until he was the victim. After that, he promised, he would help anyone.