I am not sure how modern this bias is as bias based on economic status has always been around. People of color tend to feel this bias more keenly because of assumptions made based on race but this is also what it means to be poor or have either no health insurance or bad health insurance or often times medicaid or medicare (without old rich people supplements). The exerpt about the Professor’s hand is interesting but not news.
This reminds me of the Racial Equity Project going on at Indiana University. Much of the research Dr. Skiba and others have conducted seems to show that many of the racial disparities in school punishment are actually not because of what we consider conscious racism but a more unconscious type of way Americans innately trust people who share their skin color and distrust those who do not. Thus, white teachers seem to be giving white students the benefit of the doubt in situations in which punishment is up to a teacher’s discretion far more often than black students. This kind of behavior is going to require so much work to overcome.