Answer:
Redlining
Step-by-step explanation:
In real estate, redlining refers to mortgage lenders refusing to make any loans on certain neighborhoods or city areas. The term redlining is used because theoretically the bank draws a red line on a map to indicate city areas or neighborhoods in which they will not make mortgage loans. Usually redlining is done to exclude neighborhoods that are considered very dangerous or troublesome neighborhoods specially due to high crime rates.
Redlining per se is not illegal, but when redlining is done on a racial basis it is considered illegal. For example, in this case the practice is illegal because the bank is redlining an area because it is an Asian neighborhood.