People sleeping in every car park at parks and beaches etc
I'm a night person with bad insomnia so I often go for drives or walks at night and a lot of my favourite places to go are now heavily populated by people sleeping in their cars
The homeless situation isn't quite that bad where I am in Perth's suburbs, but there was a guy living out of his 4WD in a local shopping center carpark for a while. He had a prominent sign about his situation asking for money, but to his credit he was offering to do things in return (he helped a family member with a deflated tire once). Many of the homeless in Perth city seem to be mental health cases though, where a skilled job providing an income that could support themselves is unlikely.
It is unreasonable to allow library patrons to make it unsafe for anyone, particularly children, but that has become the de facto standard in many areas. There are a lot of libraries I would not allow my kids to be in by themselves.