‘Knock, knock’ is so often the start of a joke. But not this time. This time, it is the story of a Korean campaign that gives victims of domestic abuse, dating violence, and child abuse a way to report to the police while sharing a space with the offender. 

The culture-shifting project won the Glass Lion Grand Prix at the 2023 Cannes Lions. The Lion for Change, as it is sometimes called, “recognizes work that implicitly or explicitly addresses issues of gender inequality or prejudice, through the conscious representation of gender in advertising.” Entries demonstrate ideas intended to change the world.