There is a rule of law crisis in the European Union (EU). The current approach to ending this crisis emphasizes the legal institutions of the rule of law, but so far it has not been very effective. The CITIZENS-LAW project therefore looks not only at the legal foundations, but also at the social foundations of the rule of law. Do people know the law, recognize the law and use the law? CITIZENS-LAW analyzes through empirical-legal research social attitudes about law in the Netherlands, Denmark and Hungary. These research findings are being translated into a new “governance toolkit” to strengthen the rule of law in Europe.