Do you like freedom of speech? If you do you have to accept that it may not always be to your liking what somebody says. Facebook, that is all media platforms have been forced to introduce censorship pushed by government (with the consent of the public???), since some of the content was, and is, abhorrent. But that is a problem because, censorship allows to curtail anything that the censor deems inappropriate and that may well be against your liking too. Of course, to express yourself without hesitance is in a society adhering to freedom principles a walk on the "wild side", but there is the question of do you want freedom or not. Life is not perfect and neither is democracy nor is law and order, why would freedom of speech be the exception? So! If you think you gain a better society by censorship and cutting down freedom (to what level?), you are mistaken. If a speech incites violence, it does not mean the person himself commits a violent act, it may however be his followers do, meaning but they are responsible for their acting out. They are responsible for their action, not the one who wants others to do his dirty work. In fact, not allowing him to speak, censoring his speech, means taking away the responsibility from the perpetrators. Naturally, the one misusing the freedom of speech should bear the consequences of his actions too, which may be the loss of credibility of the majority of the public or, cutting him off the privileges he enjoys, or removing him from a position that is soiled by his attitude, but it should not mean you censor what he (or anyone else) says, You do not prevent anything by shutting them up. In fact, it is rather beneficial to have in the open what one thinks and wants, instead forcing them into secrecy or hiding.
Remember, there would be no war, if no soldier goes there and there is no freedom, if you cannot express freely what you think. There is no half freedom, nor is their a good censorship. Freedom has its price and so has the loss of freedom of speech. Still like censorship? Well, then never claim you like democracy.