Not sure this is SS but approaching it.
Ducked into the nearby gelato place on the way home one evening. The shop assistant had just asked me what I wanted (confess I was going for 3 flavours) when a horde of kids came in, mostly 4-5 year olds by the look of them. Ok, maybe not a horde but several of them.
No surprise they rushed straight for the icecream display. They pushed in front of me and pressed their faces up against the glass. By doing that, they covered up the names of all the flavours (there are about 20 or so different kinds). So I couldn't see to order (was going for non-standard flavours which change week to week).
I didn't feel comfortable saying anything to the kids because, well, that's the parent's job. Thankfully, the shop assistant did ask the kids to step back when they showed now signs of moving. There was an adult who seemed to be technically in charge. His contribution was to tell the kids they could have only one scoop each.
When I walked outside, there were two couples standing near the door having a chat. One of the women turned to me with a smile and said sorry before turning back to her conversation (I didn't reply).
For me the parents seemed somewhat SS. At least one must have seen that their child/ren's behaviour was causing issues and did nothing to fix it. The kids were just doing what kids would predictably do released into an ice cream shop without any guidance on how to behave.