Candy leaned against the wall beside the broken collar while he scratched his wrist stump. “I been here a long time,” he said. “An’ Crooks been here a long time. This’s the first time I ever been in his room.”
Crooks said darkly, “Guys don’t come into a colored man’s room very much.”
– John Steinbeck
Of Mice and Men, Chapter 4. Racism and prejudice works two ways. While Crooks is isolated because he is black, white people like Candy are also alienated from black people.