Don't forget the flipside to it... while a lot of people would target those who are weak, they would be just as fast to ridicule someone who proved they were not... and as many people don't think of autistic people as thinking about things in the same way as they do... information IS getting out there about blunt statements, too...
So we stick up for ourselves, and they think "well, that wasn't polite, I have to tell them... have to TEACH them" as in, it must be one of those "blunt statement" things. They forget that they can offend us, just as they can anyone else.... and don't always equate standing up for yourself as doing just that. They look at it as just another socially inept type thing, and like to dismiss it as such, because if they think of it as offending someone who has autism, then "oooh, the shame!" when it is pointed out.
I don't understand it out there, or on here... people go off on each other all the time, autistic or not, and stand up for themselves autistic or not. There are going to be disagreements, misunderstandings, jerks, etc. on both sides of it all.
People also INTENTIONALLY say things in a jerk-like manner, or to be disrespectful, or know it is and still say it anyway... not all of those times are truly sticking up for yourself unless you really just want people to think you are a jerk, lol. There has to be a clear defined boundary.
In your situation, it's absolutely impossible to say what happened, as nothing was offered. I cannot just jump on the bandwagon and say "oh, yes-those nasty people!"
My first paragraphs were simply on-topic ramblings, but they only exist as facts in certain situations... cannot account for all.
If someone says to me "well, you are being rude" because I'm not listening, and I blurt out "well you are just a jerk!"... there isn't an excuse for that. It's an attack rather than trying to reconcile anything... it IS disrespectful. It doesn't work to stand up for yourself by ridiculing someone else... it just isn't an excuse.
If someone said "well, you are being rude" because I really AM coming across as rude, I would likely say "can you explain what you mean?" because I don't see where my actions ARE rude, and I may explain to them that there was nothing intentional about it.
There are soooo many situations that come into play, that it is just impossible to say "yeah, that's right" in response... so I hope I am not offending, as I am not saying you did any of those things... I'm just giving examples, because I think far too often, people forget that sometimes they really just do need to look at their own actions and excuse it to what others are doing.
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Sorry about the incredibly long post...
"I enjoyed the meetings, too. It was like having friends." -Luna Lovegood