Thank you all for your supportive words!

This dentist is known in our community to be good with kids. But... he sure can't handle kids with AS! He knew about our son having AS and still he acts like this!
Our son's been talking about this a lot this afternoon and evening.

I'll see to it that this never ever happens to my son again.

This is actually the second time in less than a month that a person has totally lost it coping with our son.
The first time was even worse in a way... My son and I went to my "special educationist's (therapist's) home for her to help out making him feel more comfortable about his diagnosis. He felt so bad during the summer and wanted to die. He felt unworthy of living. As a mother I've been talking a lot to him... used social stories with drawings and text- to help him. Now my therapist wanted to help out.
Well... we went there and my son was anxious and worried... so he lashed out at this woman... gave her the finger- saying "*****, you!" and then he kicked her on one of her legs.

How did she react?

She flew up from her chair... put her finger up in my son's face... said "***** you!" and then she pretended to kick him in return.

Such an evidence of true patience and understanding of AS!!!!!!!! NOT!

I finally manage to calm him down by talking about his special interest.

She's supposed to be an EXPERT on AS and has been working many years with kids. Yeah, right! Expert????!!!!

The following day I went to get a chat with her and then she said next really hurtful thing and not at all psychological words. "If he'd done that on the town square he'd have gotten arrested and put in jail... he would be taken straight to... [and then she said the name of a town with a prison]"

I said to her: "Don't you think that those fears are in the back of our heads ALL the time??? Why do you think we're seeking help???? For you to say that flat out was really hurtful, because one hardly dare thinking the thought in fear of getting totally nuts worrying.

I just don't get! How can people have such a lack of patience when they only see our son for like 30 min- 1 hour... when we deal with it every day???

The only good thing that came out of all this is... that we've realized that we're actually good parents that tries to look upon things from our son's perspective and to prevent causing anxiety looking for triggers and to use certain methods to make him calm down when things get rough. Yes... we fail... of course... but compared to some others... we're GOOD!
I can't believe I just wrote that: "we're GOOD!" Well... I guess it's time to start believing in oneself! But boy is that HARD!

Thanks for reading! You're a wonderful bunch of men and women! Keep going day by day! I'm cheering for you!