Dear Tourist Mother on 46th and 8th yesterday at about 8:15am getting on the double-decker tourbus,
Leash-a-kids are unacceptable. Leashes are for dogs, not for keeping track of your child. If you can't keep an eye on your child while he is within the radius of the leash, you probably shouldn't be taking the child out alone.
These things are especially unacceptable on an ten year old. I do realize that New York City is a very scary place, but it's not so scary that you need to leash a ten year old. That's just paranoia, and humiliating to the child.
P.S. Putting matching "I heart New York" sweaters on your three children is also unacceptable.