1/2: One of the most and least interesting things about human behavior, at least in my experience and observation, is about personal boundaries.
I've found that the Venn diagram of people who say they respect others' boundaries and people who push and/or ignore others' boundaries shows a very great deal of overlap. Experience and observation have demonstrated to me that people respect and observe boundaries they like and even that is situationally flexible.
But wait! There's less!
A large...
2/2: ...portion of people with personal boundaries tend frequently to react poorly to the behavior of people, including and often especially strangers, that they haven't informed at all of their personal boundaries.
This often leads to immediate, sometimes terribly disproportionate knee-jerk reactions/retaliations and/or an IRL social and/or social media smearing of the offender and sometimes entire demographic populations.
Clarification: I'm not talking about random dick pics, glaring...
3/2: ...malicious insults, trolling, stalking, and such but common social interactions and topics such as politics, use of swear words, casual terms of address, religion, and any number of other social and cultural topics or subtopics, as well as whether or not people agree on such things.
Emotional self-awareness and self-regulation often plays a part in the equation, as do attitudes towards other people, i.e., as people or at objects.
Humans are weird.
You make perfect sense, to me!