I don't understand the appeal of going onto the internet just to lie about a group of people who have done nothing to harm you.
I used to live in next to a homeless encampment. I used to walk by it every single day for 2 years. I have never ONCE seen a needle on the ground, day or night. You know what I did see a bunch of? People claiming that there were needles everywhere, without a single shred of evidence whatsoever.