In the aftermath of the Cambridge Analytica scandal, four European Consumers Organisations launched on 30 May 2018 to coordinate collective actions against Facebook in Belgium (Test-Aankoop/Test-Achats), Italy (Altroconsumo), Spain (OCU) and Portugal (Deco-Proteste). The Consumers Organisations argue that Facebook has infringed both Data Protection and Consumer Rights legislations.
Source: EUROPE: European consumers organisations launching collective GDPR actions