Do most dogs treat people based on their physical apparence?

It's a bit of the other way around, but people judge my dog by her appearance lol ... I have a big mastiff-offshoot breed of dog, and most people cross the street or take another route around us when I walk her. She is the sweetest animal I have ever owned, LOVES people, especially kids...it kind of annoys me when mothers pull their children away when I walk by, as if I trained my dog to eat babies or something. It's a little bit rude, don't you think? Eventually it gets to you, when everyone avoids you due to some illogical fear.

I am moving to spain this year, where dogs are loved and accepted. I am sick of everyone treating us like lepers because in my experience, every Turk, Moroccan, and Muslim in my neighborhood turns tail and runs at the sight of my baby lol