ARTICLE 19 has published a toolkit to explain Hate Speech, it is a guide to identifying “hate speech” and how effectively counter it, while protecting the rights to freedom of expression and equality.
The most important toolkit’s issues are: how identifying hate speech, what positive measures States can take to combating hate speech, and which types of “hate speech” should be prohibited by States.
The aim of this guide is trying to promote the rights to freedom of expression and equality, in order to create a pluralistic and democratic society, in which all human rights can be realised for all people.
Further information here