what's the best reply to questions like that? they arent asking why i'm taking the picture but why didn't i ask for permission.
i told someone that i dont need permission nor consent in order to take a picture in a public area, but they said "you should ask permission"
well, that's probably the stupidest answer one could forge. That will certainly not improve the situation. Plus, it's wrong in many countries. It's even wrong in the U.S. (you don't mention where you live, but you post feels typically U.S.) at least in California who passed a bill regarding the right to privacy. So you can't shoot a California resident without permission. Same in Quebec.
whats the best reply to confrontations like this? "Why are you taking my picture without my permission?"
I never shoot people without asking permission. I know it's a lot of missed opportunities but it's a matter of minimal respect.
It's not a stupid response, it's the correct response depending on how it's conveyed to the subject that got their image taken. If you are aggressive about it, things will probably head south.
If I understand even the relatively recent changes to EU laws correctly, photographing people in public is not illegal, what the legal issue actually is, is what the photographer intends to do with that photo. If it's for commercial, for-profit purposes, you need permission. If I print it and hang it up in a cafe wall, I am breaking no law. If I sell the print as 'art', I am breaking no law, but yes it does become a little fuzzy in this case interpreting 'for-profit'; however, IIRC there is an exemption for photos that have cultural or artistic merit (though you may be requested to 'prove' it).
I've never been confronted except one time by a drunk woman in an alley who falsely claimed I took a photo of her. If I were confronted, I don't have a choice but to politely defend my rights. If we abide by those who insist we need to ask for permission, we are basically letting them dictate the law as they see fit. Of course, if in the end they still demand I delete the photo, I will. Or maybe not. If I think the photo is worth keeping, I may just go ahead and call the police.
If taking photos of people in public without their consent is illegal, then online photo galleries should be taken down, sites like saatchi, where photographic prints are sold, should be taken down; and why don't police patrol the streets and inspect people's cameras for infringing captures and missing model releases -- easy pickings there, I'd say.
Beyond all this legal mumbo-jumbo though, IMO the trick to having a hassle-free experience as a street photog is up to the photog. If you know how to blend in and appear non-threatening to people while 'in their space', you should be fine. But I have seen way too many yahoos either hiding (which only makes people more aware of them), or pretending they're the next Gilden.
Moreover, I personally think that most street photos taken >>today<< have little relevance >>today<< and I don't understand the need to immediately post images to FB/IG/etc where it's mostly about sh**s and giggles anyway. Why not let the images sit on a disk for 5-10 years before showing them? By then, 1) the photographer may realize his 'keeper' isn't a 'keeper', or 2) enough time has gone by that the subject probably won't care about their likeness displayed on some cafe wall or online gallery, meaning you've already alleviated this permission nonsense just by letting some time pass.