@Hyolobrika smoking norms are a more “ethical” example, in the sense of affecting others. when i was a kid, people could smoke anywhere, and objecting (except apologetically, referring to some very personal special circumstance like asthma) seemed more like imposing on others’ legitimate rights than defending ones own. as laws changed, norms changed sharply. now even without overt objection, exposing others to second-hand smoke requires permission, or seems a violation. 2/