How are the characters in Of Mice and Men discriminated against, as Crooks is discriminated against for his color?

Many characters in Of Mice and Men are discriminated against in their society. The main characters, Lennie and George, face discrimination because they are in the working class and are poor and without land. For these reasons, they are often subject to unfeeling bosses and unfairness. They must live a migratory life, despite their dream to one day own their own farm. In addition, Lennie faces misunderstanding and discrimination because he is developmentally disabled and to some degree has the understanding of a young child. People can take advantage of him, and they often do. In addition, he does not understand his own strength, and the combination of his strength and mental disability make him frightening to others.

Candy, another worker on the ranch, faces discrimination because he is old and has lost a hand in an accident. His value comes from the work he can do on the farm, and, as he can't do as much work as the younger, fully abled men, he is less valued. Carlson, another hand on the ranch, shoots Candy's old dog, as he argues that he will put it out of its misery. Candy's dog is a symbol of the way in which the old, disabled, or infirm are not valued on the ranch.

Crooks, as stated in the question, is also left out because he is black. He tells Lennie he, Crooks, is not wanted in the bunkhouse because he is black, and he is isolated from the other men.

Finally, Curly's wife is isolated because she is a woman. She is the only woman on the ranch and has to spend her time in the house alone, where she becomes lonely. Ironically, Lennie, who has the mental state of a child, is perhaps the only character who is not judgmental of other characters. He is open minded and fair and has no preconceptions about how he should judge others.