[NMR Guy]

I don’t know where this person grew up, but I was born in the 70’s, and in San Francisco, it was definitely not carefree or safe, regardless of whether my parents realized that or not. I carried a switchblade from age 12 on, to school and everywhere else.

I suppose SF isn’t exactly typical, but I think (at least partially) the sense that things have gotten more dangerous since the 70’s is imagined.

[LantzALot]

I was born in the 70’s, ... I suppose SF isn’t exactly typical,

SF became atypical even before you were born. I'm not surprised that you think others' perceptions are "Imagined" just because they're not the same as yours.