The person who tags “A City of Children” on all sorts of things decided to contribute to the MTA’s Art in Transit program without their permission. (Photo: Bucky Turco/ANIMALNewYork)

The person who tags “A City of Children” on all sorts of things decided to contribute to the MTA’s Art in Transit program without their permission. (Photo: Bucky Turco/ANIMALNewYork)