
https://www.hrw.org/news/2023/08/21/saudi-arabia-mass-killings-migrants-yemen-border

https://blogs.lse.ac.uk/europpblog/2021/10/05/how-the-size-of-a-citys-immigrant-population-influences-feelings-of-trust-and-safety-in-urban-europe/

https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1714en.pdf