The Yellow Dog Project
The aim of The Yellow Dog Project is to raise awareness of dogs who need a bit of space. The idea is to tie a piece of ribbon on the lead of any dog that is in need of some space, so that other people will know to give it some room.
However, this should not be used for dogs that simply need training, or who's owner is unnecessarily too scared to let their dogs socialise. Socialisation is THE most important thing that an owner has to do for their dog.