How to deal with hate speech? A comparison between constitutional models

These are hard times for freedom of expression. Internet has changed many of the rules of the democratic game, posing new challenges to old issues. The constitutional debate has focused on determining the constitutionality of measures that, limiting freedom of expression, are aimed at protecting other fundamental values endangered by hate speech. Should constitutional systems tolerate hate speech and allow its dissemination?
The answers that the comparative constitutional experience offers to this question can be systematized in “constitutional models”, understood as a synthesis of the main legislative and jurisprudential solutions provided in each state context, which identifies different “resistance thresholds” .
The presentation will focus on four “constitutional models” in order to identify which one may represent an appropriate answers to manage the rapidity of the changes generated by Internet.