From the text:
"Well, I got a right to have a light. You go on get outa my room. I ain't wanted in the bunkhouse, and you ain't wanted in my room."
"Why ain't you wanted?" Lennie asked.
"'Cause I'm black. They play cards in there, but I can't play because I'm black. They say I stink. Well, I tell you, you all of you stink to me."
Of Mice and Men