Of mice and men: List details about crooks childhood? What is unique about it?

He reveals that when he was a child he would play with white children from the surrounding area: "The white kids come to play at our place, an' sometimes I went to play with them, and some of them was pretty nice. "My old man didn't like that." ... As a child, Crooks is unaware of racism.

It is unique because as he gets older Crooks would understand his father's worries as he became victimized by prejudice against his skin color, called derogatory names and forced to live separate from the other workers on the ranch.