Take "chain migration," an academic term that has recently been overlaid with negative connotations.

Chain migration has, since the 1960s, referred to the process by which migrants from one city or town follow each other to a new destination, possibly in another country. Thanks to chain migration, even low-income families can create or maintain social networks and access a wealth of social capital. Early arrivals support newcomers with a place to stay, resources and information about the local labor market, schools and culture. Chain migration facilitates cultural integration.