The Grapes of Wrath: Which best describes the tone of this excerpt?

The movement changed them; the highways, the camps along the road, the fear of hunger and the hunger itself, changed them. The children without dinner changed them, the endless moving changed them.

And [they] streamed in on the highways and their hunger was in their eyes, and their need was in their eyes. They had no argument, no system, nothing but their numbers and their needs.

No, me, I’m hungry. I’ll work for fifteen. I’ll work for food. The kids. You ought to see them. Little boils, like, comin’ out, an’ they can’t run aroun’. . . . Me. I’ll work for a little piece of meat.