Love your sense of sarcasm, but pcunite is morally correct (nothing to do with politically correct, which is a bag of garbage) insofar as he objects to the grabbing of unauthorised images of people.
At best it can be seen as intrusion, and at worst as exploitation, particularly where the making of money from another´s dicomfiture is concerned.
It is something that I find somewhat annoying, this random photographing of people just because you might want to do it. I give you an example: I live in a little town that, during summer, turns into a tourist hell. I might be sitting at a table having a coffee and somebody will stop, point a camera towards where I am and make a photograph. I am perfectly aware that I am not the subject, that I just happen to be in a nice spot, but I still don´t like the thought of being in some stranger´s holiday snaps. Worse, walking along the front by the sea, I am expected to stop every few yards to permit some dope to finish making his picture of the wife and kids looking out to sea. Guess how long it would take me to walk a hundred yards if I were still to give a toss about these people and their pictures! You see? The camera can breed a certain intollerance when it starts to intrude on your life. I quite understand why some "primitives" might want to cut photographers´ throats.
And so, when you look at Cartier-Bresson's or Frank's, or Winogrand's photographs what you feel is annoyance?
If a street photographer is doing his work properly, in most cases you'll probably never know you were photographed, or at least you won't be sure you were photographed. There are a lot of Winogrand's photographs I don't like because he used flash. That's an absolute no-no for street work as far as I'm concerned. But I'll have to admit, even though I'm annoyed by the idea of flash in those pictures I often still find them interesting comments on the human condition. I think that if people stop doing good street photography we'll all be diminished.
Yes, I agree about the cloddish tourists with their slow reaction and their flashes. What's even more annoying is that I no longer can take a camera into a museum because those clods have been in there flashing their flashes. Ever been to a play or a concert where people in the balcony were flashing their flashes -- too far away for the flashes to have any effect on what they're trying to photograph but close enough to annoy the performers. But none of this is good street photography. It's the difference between a meat axe and a scalpel.