How would you react if you saw a child being kidnapped? Put your own safety in jeopardy and wade in? Call the police? Freeze with terror and panic? Or stick your head in the sand and do nothing at all?
Film-maker Yousef Erakat decided to find out by mocking up a child abduction to see how members of the public reacted when they were faced with a potential kidnapper.
In the US video The Kidnapping Children Experiment – an idea which was inspired by Erakat's irrational fear of being abducted when he was young – a child actor approaches several adults telling them a man is trying to put him in his car and asks them to phone his mother.
Moments later a man appears claiming to be the boy's father and tries to take him away.
More often than not the child, called Nathan, was ignored but one woman pepper-sprayed the 'would-be' kidnapper, forcing the cameraman to come clean about the experiment before she inflicted further damage.
The footage is posted on the YouTube account fouseyTUBE, which has been viewed more than 1.2 million times.
An introduction says: "Growing up my biggest fear was getting kidnapped. I would get home early from school and sit on my front lawn until my parents came home because I felt like someone was inside my house waiting for me.
"This video was a way for me to express that fear in an artistic way and also spread positive change as to why it is important to act when put into these types of situations."