I remember back in the 80s,.and SONY Walkman cassette players became a thing. I worked in a record store, and I was an early adopter, although I had to go with a knock-off because I couldn't afford the SONY at $3.35 /hour minimum wage.

I loved being able to listen to music while I was driving (way better sounding than whatever shitty radio I had in my shitty car), park, get out, walk across the parking lot, through the mall, and to my store (or wherever), without stopping the music.

I quickly realized that as I walked through the mall, I would get really dirty looks from people, especially older ones. They really took offense at me minding my own business and listening to music. I'm sure they would have been more offended if I was just walking around with a boombox blasting on my shoulder, like the style in some places at the time.

I don't know why they would care about me listening to music, or why they would think they have any right to let me know their opinion (through their visual cues), and mostly why I'd care what they'd think. I didn't care what they thought about it, and I was offended that they presumed that I should care what they think.