https://www.theverge.com/2020/4/20/21228324/amazon-whole-foods-unionization-heat-map-union https://www.theverge.com/2020/4/20/21228324/amazon-whole-foo... "a “

https://www.theverge.com/2020/4/20/21228324/amazon-whole-foods-unionization-heat-map-union https://www.theverge.com/2020/4/20/21228324/amazon-whole-foo... "a “diversity index” represents the racial and ethnic diversity of every store. Stores at higher risk of unionizing have lower diversity"