The rules and protections for photographing people in a public space differ from country to country. Surely though, irrespective of the laws, street photographers have a responsibility to care about the dignity and the privacy of the people we photograph? I think we do.
Irrespective of your experience, skill, camera, budget or time, the images that you produce represent your view of the world. It makes no difference if someone likes, or dislikes your images. They are your images.