Where perhaps the quakers or MLK were doing it out of moral outrage.
Isn't it impossible to determine the internal motivations of others? And even if they were doing it to make themselves feel more virtuous they can still be turn out to be right on the issue, can't they? Or it's possible that there's a combination of both moral outrage and ending up feeling virtuous.
e.g. sometimes white people have some experience where they realize how much crap black people get; they might actually meet some black people or learn about history (e.g. black people have been complaining about the police in America as long as there is America, why are we supposed to remember one person's name but forget Rodney King or the Watts Riots, that people like Booker T. Washington had trouble w/ the police) but instead they chant thought-stopping slogans like "defund the police" (tell that to the black people who have gunshots in their neighborhood every night) and instead of saying something like "Black people are beautiful" they have to say "Black lives are beautiful".
The trouble is that people today are looking back 15 minutes and looking ahead 15 minutes and are up against the likes of Xi, Putin and Netanyahu who are thinking in terms of hundreds of years if not thousands. They're like children in the hands of gods.
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There is an undercurrent of priggery in attitudes about sexuality that's a different and much more complex theme that starts w/ Baudrillard's essay at the beginning of
https://monoskop.org/images/9/96/Baudrillard_Jean_Seduction....
and continues with experiences such as discovering that when squicky rumours are flying around it is is the former BDSM professional several steps removed from the event who goes the the police with a garbled, confused and hysterical story or that the transgenderist gatekeepers of Tildes don't know that there are 549 paraphilias (see https://en.wikipedia.org/wiki/Paraphilia) and that pedophilia is just one of them in their mad rush to cancel anyone they can. In contrast the people who pray a few times a day, homeschool their kids, and volunteer on deadly cold nights at the homeless shelter, while people who hate them are sharing hateful memes online, who "seek first to understand" the way Steven Covey says you should)
I would suggest instead that a prig deems a person to be bad/evil based on them having a different view/behavior that society is generally divided on.
I think the big take away is that being right via a lecture doesn't do anything.
If you are morally right, and your aim is social justice, you should stop lecturing people, because it doesn't actually achieve what you are aiming for or really even advance the cause (in fact it may run backwards).
Instead, go out and do something. For example, defer typing up that long comment about how [x] is right and [y] is wrong, volunteer for some community service. Build shelters for people who need it. Offer pro bono services to marginalized groups.
If nothing else, simply live your way of life and out compete the people who were wrong.
But that 1000th internet comment you posted, even if it was "right", it didn't make a single lick of difference. So ask yourself why you really put it up.
Actually it's through Internet conversations and mostly online education that my mind was changed, my whole worldview in fact.
Quietly doing good is admirable. So is speaking up where people are talking. Both is even better still.
Or take the abortion debate. We don't want anti-abortionists "taking action" against clinics and doctors any more than we want pro-choice advocates doing back-alley abortions if we can avoid it. It's all very dangerous!
i'm basically a professional social justice warrior in tech and nobody is lecturing each other. everybody just does the work.
There’s a great sttng episode, the drumhead, which explores witchhunts.
The very idea that your opinion would change over time terrifies people like PG. If you are useful, you must stay predictable. If you are not useful, you are a convenient target.
Stoking the classic 'us vs them' is the oldest trick in the book. Pay no attention to the man on the podium.