On a frequent flyer board:
[ul]
[li]Should children be allowed in Business/First Class?[/li][li]Should you tip in an airline lounge (generally referring to bar staff, but can include shower attendants)?[/li][li]Is it OK to tip flight attendants?[/li][li]Is it OK to buy a First/Business Class refundable ticket just to access an airline lounge?[/li][li]Is it OK to ask a stranger entering an airline club to guest me in (and the related question, is it OK for me to take a random stranger into an airline club as my guest)?[/li][/ul]
Even barely questioning the pro-vaccine people can get one banned. They are pretty sure that an unvaccinated kid will spread the plague or something.
Heavens no, not the plague. Just malaria, measles, whooping cough, rubella, polio…
(I am generally opposed to banning people for questioning anything.)
Which might very well spawn a heated side-discussion over whether and at what age it’s acceptable to dump kids in economy alone while their parents fly in first or business.
You are referring to a pre-op procedures board I presume. 
One person seems to think that the war is over, the FSF has lost. Oddly, the article has a picture of him standing near some grillwork that looks like it is highlighting a swastika, so his opinion may not be unassailable.
Now, if we want to discuss subroutine length, the use of embedded conditionals, whether the “{” belongs on its own line, and other aspects of source formatting, we might get some people wound up.
It would be inhumane for people banned from here not to be allowed to go somewhere.
Should AHK/multilogging be legal in ‘competitive’ video games. Has David Ortiz taken steroids? Did Tom Brady order the deflation?
Of course! Also a big topic (at least in days past) in Obstetrics. But the best studies tend to show shaving does not reduce rates of post-delivery infection, even with complex perineal tear repairs.
What did you think I was referring to? 
is that still going on? I’d thought AMD was all but irrelevant by now.
Generally, you have to look for such threads on a specialty car board - try one for classic Mustangs or Corvettes or Porsches, for example.
The handyman/DIY/home mechanic boards an those for daily driver vehicles don’t tend to go into the “test your oil” spectrum.
Kind of like barely questioning the evolution people. You just can’t get a word in edgewise about 4004 BC.
On classical music forums, topics like :
- Contemporary classical music sucks.
- Is classical music snobbish ?
… can turn nasty very quickly.
Sporterising old military rifles (My view: Absolutely not acceptable and should never be encouraged).
Understandably, anything shooting related can get pretty political very quickly, which means a few of the boards have extremely strict NO POLITICS rules - which is awesome for the 98% of the time it prevents people from going on a “[Politician] WANTS TO TAKE EVERYONE’S GUNS!” rant, but less helpful when people who live outside the US are trying to explain their gun laws and why it’s not possible to legally own [whatever] in the country they live in.
there’s a spectrum involved, alright.
Martial Arts boards. Unless TPTB have a tight rein, they will quickly degenerate into “Art XXX is better than art YYY”, or “Art zzz is Teh Ultimate Killing Art”, or “So-and-so is the supreme ruler of the cage” and other crap like that.
Rec.music.beatles died in flames over one user.
That one left me scarred for life, to be honest. It went off-board, it went personal…
I had a guy from usenet harass me for quite some time, including calling me at work to issue rape and death threats.
I didn’t like his poetry.
I know you’re being humorously disingenuous; but read the comments under any YouTube video about growing or maintaining a beard. Apparently, shaving a beard is an act of self-emasculation comparable to amputating one’s testicles.
There is a lot of grey in behavior, though. A fair percentage (something like a quarter of the population) of greyhounds are naturally shy, a smaller percentage of those are downright spooky (afraid unexpected noise or movement). It’s extremely easy for people to assume that these dogs have been abused, but we have a lot of evidence of dogs born that way. So the general position is to not assume abuse happened unless you know 100% without a doubt that it did, as in you witnessed it.
There is also the problem in greyhound circles of the genuinely horrible history of abuse, which when mixed with the breathtaking defensiveness of people in “the industry” still today, means you just can’t even imply that abuse ever happened. I’ve educated myself as much as possible without actually racing a dog, and after all that I lean more pro-racing than anti-racing. But even with a pro stance, the industry people will beat you away, slap their hands over their ears and shout “it never happened, I don’t know anything about that” over and over again until you give up and go away. So there’s just no reasonable way to discuss the topic, even if you frame it as lessons learned or “how things have improved”.
And then the whole issue of animal abuse is fraught with wackos - there are people who seriously feel that keeping an animal as a pet is abusive. When you work in animal rescue, you see those people pop out of the woodwork a lot. So again, it’s better to not go there if you want any civil discourse in a forum.
You forgot this one that never fails to end up in a war: recline your seat or not?