This footage is allowing the entire world to take a personal peak of the evil that exists in China, specifically the populous province of Guangdong, with a permanent population of nearly 80 million. You may have to open a youtube account in order to view. Take your time; read the comments, as there are many Chinese online actively defending their people.
Research shows that when there are more people around you are less likely yo get helped. There was a case of a snobs stabbed to death on day light. There were 32 witnesses bit none call the police. This is a topic in psychology.