Hi
I too sometime like to shoot people in their everyday life and surroundings particularly when I travel in unfamiliar places and cultures as I feel this is often the better record and memory between their and your life to bring home.
Then this happens. I get back to the hotel after a day out and sift through the day's "harvest" on the bigger computer screen which shows more detail and suddenly I freeze and hear myself say... "sh*t, this could have been ugly". During the picture taking it was not obvious, but then this.
This guy here looks none too happy and I am glad I came out of this in one piece, in a strange country, at night, not speaking the language and all by myself

Must be more careful next time, but then again it is hard to see who is observing you all the time.
Greetings