If you read the novel from the very beginning right to the end, you may find its title confounding until chapter 25, in which it gives a detailed depiction of the fate of the grapes: buds, blossoms, green ones, ripe ones, windfalls, and the rotten. The first four stages are what the land-deprived farmers' expectations--the pastoral country life awaiting them in California; the last two are the miseries they are sinking into till the outburst of their anger. In fact, the story just begins when the story ends. Wrath with its emblem "red" is the key tone of the story. The association of the grapes and the wrath, at first sight to me, seems to be perplexing, but with the development of the story, my perplexities dissolve. Imagine the "bombast" of ripe grapes from falling down from the vines!! The purple and red pulp splatters and spreads all around the land. That stands for the anger of the "immigrants"; that is the prophecy of John Steinbeck--the uprising of the land-deprived, hunger-stung farmers, the unified, arms-equipped proletariat!! " In [in] the eyes of the hungry there is a growing wrath. In the souls of the people the grapes of wrath are filling and growing heavy, growing heavy for the vintage."( Chapter25)The dumping of the unsold grapes and other crops is unbearable, which divulges the cruelty of the big farmers and the monstrosities of the capitalist social system. It is a "failure" of the so-called democratic free country. It is a "sin", a "crime". They are altogether the "son-a-bitch" of capitalism.