To what evils does Steinbeck compare the evil growing in the town?

the scorpion, hunger, loneiness, a snake

"Kino's pearl went into the dreams, the speculations, the schemes, the plans, the futures, the wishes, the needs, the lusts, the hungers, of everyone, and only one person stood in the way and that was Kino, so that he became curiously every man's enemy. The news stirred up something infinitely black and evil in the town; the black distillate was like the scorpion, or like hunger in the smell of food, or like loneliness when love is withheld. The poison sacs of the town began to manufacture venom, and the town swelled and puffed with the pressure of it."