There has to be a way that something like this is avoidable. Even elevator doors have sensors that stop the doors from crushing you, and elevators are an extremely old invention. This poor woman just wanted to get off the bus, but either an automatic system closed it on her or the bus driver really hated her. I'm going to bet the bus driver hated her. If you drove for nine hours a day you'd hate people too.
It's very likely that his woman is foreign and doesn't know how the public transportation works here. Imagine going to another country and seeing a door you've never seen before. It seems ridiculous and unlikely, but it could happen to any one of us. We take what we know for granted. Think about that next time you're on your way to China.