Imagine that you are waiting for the elevator doors to open, and when they do you see a man being killed a few feet away from you.  What would you do in that situation? 

There are really only two choices, help or ignore.

The level of help that you may offer is where the situation gets very complicated.  You could directly interfere, but risk injuring yourself in the process.  You could call 911, knowing that it might be too little too late or you could just walk away.

After you watch the video, see if you are as amazed as I was at how many people chose to just walk away.