I'm a novice, nervous street photographer. I did get out for some street photography in Uptown, Dallas, Texas, which is north of downtown about a mile. There are nice shops, a trolley, and sidewalk cafes. Well-to-do people hang out there on a Sunday morning.
In all of Dallas, I estimate that there is less than one square mile total area suitable for street photography, which I define as where people actually get out and walk around, or sit at tables by sidewalk cafes.
I used a Rolleiflex Gray Baby for my first walk through Uptown, and a Rolleiflex 2.8E for the next. I had pre-determined that I would not take pictures of the backsides of people, and to my surprise, nobody objected when I took their picture. I even received pleasant comments on both of the cameras from people. One fellow even asked me if I'd gotten a good picture of him. I said, "I tried!"