Arguments

Social class exists even in an industry in which the jobs are the same.
A Touchy Subject 481. "In the construction business there's a social hierarchy of jobs, with "dirt work," or mere excavation at the bottom; the making of sewers, roads, and tunnels in the middle; and work on buildings (the taller, the higher) at the top."
-The relation between the argument and this quote is that even in an industry like construction, where the workers do the same thing(construct), social class of lower, middle, and higher exists.

Racism is the cause of race, as opposed to it being the product of race.
Pg 413: "If prejudice is about ideas--unreasonable judgements or convictions--then discrimination is about behavior--unreasonable treatment based on class or category. Racism is a structural problem, a form of discrimination based on group identity that is embedded in institutional process of exclusion. As such racism is a social construct, more a cause than a product of race."
-The relation between the argument and this quote is that, the quote explains that racism is an unreasonable treatment towards a certain group, by means of using a exclusion method defined by society. This shows that racism, which treats a certain group unfairly by kicking them out, causes that group to be labeled as a certain race. An example of this would be, if you were to exclude a colored person from yourself because of their color, you categorize them as black,yellow, or brown. Thus your act of racism, has caused you to label that person as a "race."