Through chapter 13-Social Psychology, i known a basic rule that is we are all social animals. From the ancient year to modern society, people can't live without social-that is consist of small group of people. We influence each other in anyway and in anytime.
In the section "Helping And Harming Others:Prosocial Behavior and Aggression", evidence suggests that"Human nature is a blend of both socially constructive and destructive tendencies." In other words, that is people sometimes helping others without asking pay back but most of time we don't do that, or even do some harmful things instead. We usually called the former "Prosocial Behavior and Altruism". The word 'Altruism' could be understand as "Helping Selflessly", it's a great phenomenon that we want it happen arround us more.
But in the reality, people seems not active to help others out of emergency. The cases of Kitty Genovese and Richmond, California, gang rape tragedies was shocked me, i can't believe the world is so cold-blooded that people could pass by those murder or brutal savage and ignore and then just let it happened?! I remembered when i was back to China for winter break just in one month ago, one day i walked in the street with my friend, suddenly i saw a bunch of people in the corner and they were stand around three guys and staring at them, me and my friend walk approach them and saw there were two guys keep punching at a guy and seems like they were trying to catch him away, I found out people arround them were just stand there and look at them although the guy which be punched keep shouting"Help!!!", so i called the police immediately. This event ended by the policeman coming and the crowd dispersed.
Although the book said people have two obstacles to intervening an emergency(pluralistic ignorance and diffusion of responsibility), i thought we should keep help others as much we can when we run into an emergency in mind.