I think it’s fine for a homeless person to come in for half an hour to peruse books and check them out. In that case the homeless population of the library will

I think it’s fine for a homeless person to come in for half an hour to peruse books and check them out. In that case the homeless population of the library will be roughly the same percentage as they are of the city overall. That’s obviously not the case, homeless people are over 50% of the library’s population at any time of day since they stay all day while everyone else spends 15 minutes.