Here is the situation:
One fine day, you took a break from an evening walk. In the park, you could see a child crying all alone. You, who wasn't good with handling kids just look at her. Later, a woman pass by and asked you:
"What have you done? Why is she crying?"
"I don't know. I have done nothing. She already crying when I get here."
"I don't know. I have done nothing. She already crying when I get here."
"..."
Get what I mean? If not, let me tell you something. You can't always be an innocent bystander...
Sometimes, either you will be a hero (at least an attempt would do) or a guilty bystander.
That's all folks~!