On saturday my sis (who's severely autistic) was out with a relative.
Because of her disability she does pull faces etc not at people just in general.
a couple and a dog on the bench infront turned around and said.
'What!!!' really loudly
the rel just said I didnt say anything.
they then said 'She's rude!!!!!' etc having a pop.
told the relative, told them to back off as they were minding their own buisness.
At that point the girl came over with the dog and said 'I'll set this on ya!'
DR said if you dont go away I'm calling the police, she apparently had another go but both of them walked off.
The girl did set the dog on them both , my sister is terrified of dogs 
put thankfully the dog decided not to bother.
AIBU to be horrifed that people like this exist?/