Well, I can break it down from my pov:
Picture 1: Bored kid with binky stuffed in his mouth is at the end of his rope (literally) while parents ignore him and chat with each other.
Picture 2: Kid is again at the end of his rope crawling towards gross stuff on floor. Mother is apparently not interested in stopping this behavior beyond watching him do it.
Picture 3: Mother who is apparently ablebodied (she's wearing running shoes) and unencumbered by bags or other items watched kid play in the water. Note the blue binky around his neck dragging on the ground. Why does this kid need a leash? Where's the crowd?
Picture 4: Kid walking on leash behind dad, mom, and the dog. Dead last and ignored.
Picture 5: Kid sitting on ground at the end of her leash, ignored. Parent is completely turned away from her. If the woman in the black shirt backs up she'll trip over the leash and the kid.
Picture 6: Kid walking behind parents, ignored. Notice how she's holding the leash, and how it would be so easy to be holding her hand, instead.
Picture 7: Twofer! They're training for the Iditarod.
Picture 8: Again with the kid walking behind the parent. No eye contact, no notice. Kid is at the end of his rope. And the whole thing about parents having more security-she's BARELY holding onto that strap.
Picture 9: This is the only one I think that the leash may be appropriate. Both parents are paying attention to a very young child who may have Down syndrome.
Picture 10: I have my dog on a leash so I don't have to worry about him while I have a chat. Me too, except it's my kid. Notice the other kids are ignoring the kid on the leash.
Picture 11: Both kids are walking behind the parent. No eye contact, no notice. Younger one is at the end of her leash and holding on, probably because the mom is walking too fast. But at least they match.
Picture 12: Son, you're just less important to me than whatever this thing is on the ground that all the other adults are staring at.
Picture 13: Yeah, he looks happy and included. Future unhappy ignored kids of america, unite!
Picture 14: How's that working for you?
Picture 15: He's practicing Ghandi's passive resistance. Well, it must be some sort of a teachable moment.
Picture 16: Worth a thousand words.