Grey Spain made outdoor signage for ANAR in which a little boy's face stares at passersby.
It is only people under 4'5", the approximate height of 10-year-olds, who see the cuts and bruises on the boy's face with the secret caption, "If somebody hurts you, phone us and we'll help you."
Parents and other adults only see the unbruised boy with the message, "Sometimes
See how it's done in the video below: