The bystander effect pretty much means that if there is a large number of people that witness an act of violence, that no body will report it because they all think someone else will do it. It is a big problem because it can mean life or death for a victim. A classic example of this was story of Kitty who was stabbed several times, but nobody called the cops because they assumed one of the other witnesses would do it.
I can think of a really good example that plays role in today's world. First answer this question: How many of you have seen a drunk driver late at night? Did you call the police? If you did then good for you, if you didn't, you most likely fell prey to the bystander effect. Don't feel bad thought because I have done the exact same thing. Another example that could be used today was if you witnessed a big fight, and there were multiple other people that witnessed it as well. It is pretty unlikely that this would happen, but looking out my window, that is what I thought about. What are some possible scenarios that you can think of where the bystander effect would come into play?