blockbusting
US /ˈblɑːkˌbʌs.tɪŋ/
UK /ˈblɑːkˌbʌs.tɪŋ/

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