Can I get something off my chest? I saw a child abduction today. I did nothing.
Oh my, what were the circumstances behind the incident?
I didn't do anything because I was too afraid of what might happen to me.
I can understand being afraid in that kind of situation but you should have done something. You must notify the police about what you saw.
What if I get killed?
I am not telling you to intervene. All you can do is call the police and let them deal with it. Don't feel bad about it because I think you were shocked and most people would have reacted the same way.