When I was a young man I would actively call people out who did things like throw trash on the ground or light a smoke at a gas station. What I experienced 9 out of 10 times is argumentative justification or deflection.
People have accountability problems.
I don't even bother calling out bad behaviors as much anymore, would rather not get assaulted verbally or physically.
Situation dictates. Sometimes I just can't help myself from asking a person why they're acting like a piece of trash. (Slang here..."trashy person")