https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/662744/State_of_the_Nation_2017_-_Social_Mobility_in_Great_Britain.pdf
https://www.ipg-journal.de/regionen/global/artikel/detail/back-to-the-roots-4359/
https://www.brookings.edu/blog/order-from-chaos/2018/07/31/its-time-for-the-united-states-and-europe-to-face-the-politics-of-cultural-displacement/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=64909281