Bit of an odd one -
Was walking through the town I work in on my lunch break, and went for a stroll down a street I had not been down before. It had a few houses but lots of charity shops.
As I was walking, I heard a loud grunt and on the other side of the road on the pavement was a man who could have easily been over 90 years old, and he was wearing very little clothing. By this I mean literally socks, boxer shorts and a vest. I hadn't seen him as I walked past as he was stood behind a car but as I was concerned, I crossed the road and asked if he was okay. He didn't reply so I tried to ask if he needed help and where he lived. He was just looking at me blankly and didn't say anything again.
Then a girl who must have only been about 20 came running up the road in our direction, grabbed the man by his arm and tried to pull him down the road in the direction she just came from.
I asked her "is he okay?" and she literally shouted at me "MIND YOUR OWN BUSINESS", and forcefully pulled this poor old man down the road. There were no other witnesses I could speak to but I watched her pull him into a house and shove him through the front door - I didn't hear him speak this whole time but was clearly distressed.
I called DP as I was a bit shaken after being shouted at, and he said the bloke probably has dementia and had just left the house. While I agree this could be the case, I am concerned for his welfare due to how rough she was manhandling this man.
Would I be unreasonable to report this to someone? If so, who?