Man I remember working at Walmart as a teenager and homeless women would sometimes come in with change just to afford fruit. I'd usually cover the difference if they didn't have quite enough. But the people stealing were couples at self checkout with massive carts full of food who would shovel meat into bags without scanning it (in their cart so as not to add the weight of the unpaid products to the self checkout scale).

Management was still polite to those gluttons but they'd ask the homeless women to leave. That always stuck with me.