OTOH, this is true too, and also what Ceiling Cat says as well.
I recall a homeless person who killed a guy with a brick in the Jane-Lawrence area after he had an altercation with that passerby when he was looking for a handout.
I have my own story. Once, a woman standing in the shadows outside an ATM startled me when she said hello.
It was a cool night and I asked her if she was ok. She just said she needed a taxi to get home. I asked her where she lived, and it wasn't that far. So I drove her to an apartment building about a KM + away. When I dropped her off, I gave her a $50 (she looked frail). She thanked me profusely, and wondered why I didn't ask her for a blow job. I chuckled and said 'No, I'm good thank you'. Just said good night and she left quietly.
There have been times where nut cases asked me for money with a little hostility in their voices, and I just ignored and got away from them, so you have to be careful.