I witnessed a crime when I was young. It's been over 20 years, what should I do?

From my point of view, it depends, if you saw who took the little boy, then you should tell the police and to the best fo your ability, you should describe the men that took him. Maybe it was old, but it can help other kids that are probably kidnapped by them, you may have not saved that one kid, but it's because you were a child and of course adults find it hard to believe in kids. But it'll help you feel a little better because you came back trying to help find those two men who are causing the pain inside you.It's ok that you feel that way because you were a kid and it's not your fault. But its just what i think, my own oppinion.