I was shocked to see a tourist family letting their young son have a poo in Main street a few days ago.
This is the second time in two weeks i have seen someone poo on our pathways.
The most alarming thing about this, was that it was outside the public toilet near the Island bar!!!
I was with visitors at the time so i could not scream at them. The family would probably not understand English or Cantonese anyway.

Next time i will call the police.

There is an even grosser one on Youtube showing an adult defecating on the side of the road in MongKok:

http://www.youtube.com/watch?v=f7o5VNdv8LI

Actually I was in tolerant San Franciso about five years ago and the guys sleeping rough were crapping all over the streets as well. It can happen anywhere.