Why would you call the PD? If you don't want to be kind to a fellow human being, just say, "No thanks."
Open carry.
99.9% of them want money for drugs and alcohol. It's a huge burden in Arizona, but even the whole world. Giving them money only creates problems for someone else to deal with, so no it is not a kind human gesture. The best thing that could be done is to give them a ride to the entry/exit point of Doug Ducey's gated community driveway, and help them set up a camp there. See how fast the police will come help then.
Thanks! Your answer is awaiting moderation.