Generally speaking, street portraiture is a 50-50 challenge. At least if you like me, prefer letting folks know a few seconds beforehand that they’re about to be digitally eternalized.
No matter where in the world I might be, half the time, my subjects agree wholeheartedly to letting me capture a candid shot of them. The other 50% either turn their heads, raise their hands to cover their faces or get a little pissed off by my audacious behaviour. A combo of all these reactions happens once in a while.