Hate Speech On Line in the European Context

In the European Context the spreading of hateful ideas is considered a serious threat for democracy and the respect of human dignity. After the Second World War the European countries launched a battle against all forms of discrimination, also through the adoption of anti-hate speech regulations. At the supranational level, the European Institutions follow the same pattern.
Since that period the protection of freedom of expression is at the stake. Initially considered as the right that help the consolidation of democracy, nowadays it is perceived as a danger. The arrival of the digital era has complicated the framework even more. Internet come along with the purposes to free the world of the information; quite soon it has shown the downsides linked with the anonymity and the speed of the online interactions.
Therefore, many new questions arise at a European constitutional level: How to regulate the phenomena? How to enforce the law? How to cooperate with the SNs companies?