There is a fine line, I agree - but I prefer to ask for forgiveness than permission when taking photo’s in public.
A society which censors the public sphere, endangers the public.
It’s a double-edged sword, and photography - like many technologies - can be weaponized against the individual; but it can also be used to gain justice against the crimes of the state.
The disrespect, entitlement and self-centered posturing goes both ways though, though.
“No, sorry, I wasn’t taking a picture of you, I was taking a picture of that cute dog - you just happened to be in the background, and I wouldn’t have anything to do with you if you weren’t so paranoid and self-centered…”
Public photography is a right which needs to be protected - by the public.
Just ask Rodney King. Or, you know, the children of Gaza. If you don’t know what either of those have to do with this discussion, you probably haven’t seen the photos…
No, I haven't "seen the photos", literally, since I am blind. Which is also why "asking for forgiveness" wouldn't work with me, because, you know, I wouldn't even notice if you didn't ask for permission. Which nicely demonstrates that you are faaaar more entitled then you might be willing to admit. Also, there are differences from country to country when it comes to laws. And what constitutes public spaces. And so on, and so forth. But IANAL, so I am not willing to enter a back-and-forth with you. Just know that your attitude isn't universally accepted as OK.
You have no respect for the culture of the place and people you're interacting with.
"Use public data, protect private data" has been one of the main reasons in the CCC since the 80s, at the same time German Law and culture is different when it comes to taking pictures than what you seem used to. Maybe familiarize yourself with it before you break the law and claim everybody else is wrong.