Besides, free speech allows the voicing of what may be once unpopular and at least controversial, yet potentially game-changing views. You don't have to like offensive speech; in fact, you can denounce it if you wish and criticise what you see as wrong. But people using force to shut down people or views that they dislike contradicts the supposed tolerance that they claim to defend and/or promote. When people voice controversial opinions, there is a chance to open up a dialogue to refute them.
"Let the haters hate! It's the highlight of their life" - Michael Whaley.
Along with this, direct threats to use violence unprovoked or to directly incite violence against a group and/or individual (such as "Let's attack group/individual x") could turn out to be real, and this is why I would see a justification for intervention by the state.
(Note; you do not have to read the rest of the following. This is just a bonus.)
Going on a tangent, it ticks me off that if there is a picture or video of a child that shows slightly too much skin then whoever made it can get into serious trouble (as said before), yet, if you actually do bad things to a child and using medical b.s. to justify it, you (and the piece of crud parents) can get away with it, literally, scott free. And if the child uses force to defend their body, the
However, I personally believe that an individual's body is sacred property; so sacred that I believe that they should defend it with, if necessary, lethal force.
Some people out there are going to be like "But demo, don't you think that it would be morally or ethically justifiable for a kid to pull out a derringer or pocket pistol on their doctor and pop them one over a unnecessary but small procedure?". Well, of course that there will be gray areas to this, and you will have to gauge the situation and the morals and ethics of everyone's (including your own) actions on your own.
Going on yet another tangent, I have addressed a similar self-defense issue on https://plus.google.com/u/0/116561475917836019721/posts/NEM5gJY3xQu (and StormCloudsGathering does adress this issue on an article called "When is violence justified?", though I don't perfectly agree on taxes, and I am for sales taxes and a maximum wage for C.E.O.'s).