Mr. Powell, a white man who does not believe that racial discrimination is a
problem in his community, feels most comfortable crossing the street to
avoid a black man wearing a hooded sweatshirt. Mr. Powell is displaying

Modern racism

Explanation:

Modern racism emanates from an aggressive prejudicial behavior to a more subtle prejudicial behavior. This subtle prejudicial behavior advanced to a degree that is much more difficult to see, yet is regarded as more severe. The modern form of racism is the workplace. Although many companies promise an equal opportunity, there is little doubt that everyone is treated equally within their place of work. Subtle, modern racism is believed to create an image that seems more politically correct. The politically correct way to discriminate is through a "polite" form of racism. In the past racism was easily defined and institutional

Modern racism is among the most widespread forms of verbally expressed negative racial attitudes in the United States .

the results is a decrease in air temperature with an increase of altitude.

explanation: