How do we avoid stereotyping a group of people than can span decades?

This is the noun or pronoun to which a pronoun refers.

Buck did not cry out. he did not check himself, but drove in upon spitz, shoulder to shoulder, so hard that he missed the throat. they rolled over and over in the powdery snow. spitz gained his feet almost as though he had not been overthrown, slashing buck down the shoulder and leaping clear. twice his teeth clipped together, like the steel jaws of a trap, as he backed away for better footing, with lean and lifting lips that writhed and snarled. read this passage. explain what the conflict shows about buck and spitz.

Throughout the memoir, the prisoners are made equal in the way they are treated, and again, eliezer sees their equality in another way. how does he describe the equality?