The video you're watching above is a viral piece created by a Spanish organization called the Aid to Children and Adolescents at Risk Foundation. Basically, it's an ad created that "displays a different message for adults and children at the same time." It does this in the same way 3D illusions are created for children's toys. From different angles, each viewer gets to see a different image. Adults will see a child and message about abuse while children can see an abused child with a message just for them. It's a very cool crime prevention tool I think that could be useful in the United States. Imagine if there was a similar ad but also displayed safe locations or a hidden telephone number.
For more information:
http://gizmodo.com/this-ad-has-a-secret-anti-abuse-message-that-only-kids-493108460
