https://www.ips-journal.eu/topics/democracy-and-society/cult-of-cruelty-7761/
http://www.britishelectionstudy.com/bes-findings/what-mattered-most-to-you-when-deciding-how-to-vote-in-the-eu-referendum/#.WWPVLnmQw2z
https://www.ipg-journal.de/regionen/europa/artikel/detail/macht-statt-moral-3554/