blockbusting

US /ˈblɑːkˌbʌs.tɪŋ/
UK /ˈblɑːkˌbʌs.tɪŋ/
"blockbusting" picture
1.

the practice of persuading owners to sell property cheaply because of the fear of people of another race or class moving into the neighborhood, and thus profiting by reselling at a higher price

:
Historically, blockbusting contributed to racial segregation in many cities.
Laws were enacted to prevent blockbusting and protect fair housing.