Usually (like many subjects of Trevor’s art), pacifiers and barbed wire “do not mix”. The “public opinion” would immediately associate such a mix with violence, cruelty or even paedophilia, etc.
But, as you an see, nothing can be more innocent that the story behind the photo. A baby lost his or her pacifier. And a kind human found it and put it in the most visible place. The barbed wire guards either the private property or a piece of forest without foot paths.