They've been doing this in the Chicago suburbs for decades already. First they chased all of the Whites (esp. Repub. Whites) out of the city. Then as soon as the Whites were relocated into the Suburbs, at a great personal financial cost to them, they started to empty the project housing in the city, and relocated all of the subsidized housing occupants into the suburbs.
Spreading the crime into the suburbs.
https://twitter.com/realDonaldTrump/status/1303390488175599622