The first barrier that you have to cross when you decide to take pictures on the street is the fear of people's reactions. We are afraid of people's reactions because we think we're doing something bad, we're forcing a stranger to play a game in which he\she has no power, for an apparently frivolous reason.
Dublin, 2018. She yelled at me after this shot.
Salerno, 2016. I just went in front of this guy in a very calm and polite way, this is the result.