There is a strange dichotomy at work for photographers in public places.
Once upon a time, there were few photographers out there doing their thing. I'm talking 60 years ago when my Old Man would drag me through the streets of Sydney looking for something to do that didn't cost anything. Occasionally, a Street Photographer would appear before us and take a shot, but mostly our day would be spent feeding pigeons in the park or seagulls at the Quay.
With the advent of cheap cameras and digital mayhem, everyone and their dog has a camera. Tourism is cheap. Its expected that if you're out and about, you'll be fair game for a snap-happy I can't figure out how you can be private in a public space snooper. Such is life in the 21st century.
But even with the high risk of being caught unawares, people are becoming paranoid about having their ugly dial recorded for prosperity. Worse still, their privacy is supposedly invaded, although I can't for the life of me see how anyone can claim privacy infringement while standing in full view of the passing parade.
So, to balance the scales of recording the society of today for tomorrow and being caught up in an entanglement of sensitivity for one's fellow human (if that's your thing) here's some advice:
Abide by the law.
Be discrete.
Be polite.
Wear good shoes.