That one is from Heinlein, iirc. But the gist is the same: a society where there are consequences for being rude, people are less rude.
The West used to have what has been termed an "honour based" society. Duels fought, phrases like "dem dare's fightin' words" and real Montagues and Capulets stuff. Without a pervasive authority to reliably settle disputes, people settled them between themselves. Then with a common authority, those things stop and people appeal to that authority for justice. And that works or doesn't work depending on the circumstances and the people but it does more or less settle things down. Then after a couple of generations of people growing up in such a society, everything becomes about appealing to authority and casting yourself as a victim the ultimate tactic. It would be nice if somehow we could get to the middle phase and just stay there.
I've been getting increasingly worried about what comes next. There's the meme I used to see online of: "And then for no reason at all, Hitler was elected to power." It's said after you see some disorder or abuse being condoned by authority or things like that UNESCO report that appears to be stating that children can consent to sex with adults. Basically equating our society to the way the Weimar republic went with child prostitution, economic recklessness, et al.
We're still, I hope, a long way from that. But one real depression and combine that with a collapse in social fabric and it's not like it can only happen in Germany and only in the past. Most people are followers. Eventually, if their leaders endlessly fail them, people shrug and say "okay, your turn." And I'm not talking about Labour vs. Conservatives. I'm talking about Liberal vs. Fascist.
It probably wont go that far (I hope), but I think there's a very real possibility that the trans movement is going to result in a significant social push back on gay and lesbian people and rights. I say "going to," but frankly I might better say "already is".
I'm not even wholly convinced gay male and lesbian have a 100% natural basis to be lumped together given the wildly different sexual patterns of men vs. women (in general), but I'm quite firm in my belief that LGB and TQ are not and that the latter is causing a lot of damage to the former.