Gentrification, as depicted in pop culture, tends to be a conflict between strangers. There are the original occupants of a suddenly desirable urban neighborhood, usually working-class immigrants and people of color. And then there are the relatively rich, young, college-educated white people who move in seeking cheaper housing or just the cachet of living somewhere “authentic,” only to drive up rents and displace the families and businesses that settled there long before the newcomers were born.