I was just in Aldi doing my weekly shop. It was fairly busy, but not as busy as it can get.
There was a lady & a man (maybe 50-60) with, I think, Down's Syndrome doing their shopping, with a carer (I assume, but I suppose could have been niece or similar). The lady got distressed on a couple of occasions that I saw, crying & saying she wanted to go home. The carer was busy helping the man & on the first occasion snapped at the lady 'Sit down (on her walking frame with seat) & stop your moaning'. I think I heard her exclaiming 'For God's sake' but I couldn't be sure. On the second occasion, there were more people around & she was a bit nicer, but still seemed quite unsympathetic & just told the lady to wait there until she got there.
On the first occasion, the lady did stop being upset & was occupied picking up items of shopping. On the second occasion she sat & cried for a while & an Aldi worker was working where she was & was talking to her & comforting her. I was prepared to stand with her until the carer got back but didn't as she had that company & I didn't want to crowd her, especially if she may get upset with strange faces. I hung around when I had paid but couldn't see them any more.
I know it must be a really tough job to do & I have the utmost respect for carers, I can imagine maybe the carer had had a tough morning & was at the end of her tether 
It's played on my mind a lot this morning as we've had an incident with MIL, who has dementia & also my DS has autism & I'm always aware he may need carers in the future. I can't help wondering if I could/should have done more, or if this is what MIL/DS may feel like/experience on some level?