https://www.opendemocracy.net/kamil-matuszczyk/migration-crisis-in-2017-challenges-for-eu-solidarity
https://boe.es/boe/dias/2019/11/05/pdfs/BOE-A-2019-15790.pdf#BOEn
https://www.hrw.org/news/2017/05/15/eu-should-step-pressure-poland
https://snyder.substack.com/p/political-violence