There is a similar incident that happened when i was in 5th grade:
School was over. Our school bus came at outside of school. There were students from ages 5-6 to 16-17, approx.
Usually, kids were told to stay away from school bus but they always started running towards bus to get in quickly.
What happened ahead, was that a girl, nearly 7 years old, was very near to the bus, and bus was going to stop, then.....a little brat came and pushed that girl (because he wanted to get in bus, first), unfortunately, bus was still moving...and she fell in front on of the bus's tires!!!!!!!
You can call me "hero" because i was standing very near to her and i should have saved her by pulling her out of there, but... i was too much afraid, i put my hands on my eyes and turned my back!
Bus's tire crushed her abdominal area. She died...
I was in shock and couldn't move for a whole week.
This tells that saving a life is difficult/easy, depending on the situation.