Excellent question @chrissymchavez ! My rule of thumb is: shoot first, ask later. If people are ok with it, wonderful. If not, I sincerely apologise, say that I'm learning how to do photography and will of course delete the shot (and I do actually delete it). I've offered to send people photos a few times, but not all too often. Then there's the grey zone when things happen so quickly that people either don't notice me, or it's hard to say if they approve or disapprove, because we're both on the move. In those cases, I have no explicit permission, so there is always the risk that somebody will complain later, invoking a right to privacy or copyright etc. However, that goes for most candid street photographers. Most people are generally friendly and cool. I have maybe one negative reaction a week (but then again I don't take photos every day). Only a couple of times did someone seem really irritated and actually forced me to delete the photo then and there in front of them. Still, since you ask, this dilemma - asking for permission or not - is always at the back of my mind. Consequently, when I'm not in the right "mood", it can even dissuade me from taking a certain shot or just leaving the camera home for that day...