I know what you guy are taling about.
When we had our male Doberman we took him to the dog park. We could see everyone grabbing their kids and dogs. there was about 10-15 people there. when we returned from a trail everyone had left. It made me feel terible.
Everyone just assumes breeds like the lab and golden retreivers are all friendly. for the most part they are. But some arn't. My dog was attacked by a Golden retreiver at the dog park.
I think it is just wrong that people stereo types certain breeds for me the protection breeds are the best.