A point that you have thus far been unable to support.
It is supported by recent arrests made when someone, several people, posted comments on the internet. And, by years of monitoring calls, mail, and internet activity.
Free speech doesn't make it OK to make threats.
It depends. Sometimes people say things out of anger, but would never actually do what they say. We're all human, and we all have said things before that we really either didn't mean, or that we would never actually do. I have said things before that I would never ever do, but was angry at the time. How many people haven't? If I were to say that I hope a certain person has a bad car accident and gets killed as a result, and I said it in anger about a terrible driver that almost ran me off the road, doesn't necessarily mean that I honestly wish death on that person. I was angry at the time, and ten minutes later it means nothing to be anymore. We've all said terrible things in moments of anger, all of us. Does that mean that we should be arrested and charged with a crime? Have we committed a crime?
Punishment should be for crimes committed, actual acts carried out. And, not for someone speaking boastfully or in a moment of frustration and anger. If a person acts on what he or she says, then that's a different ball game. Yes, that person has not only said it, but carried out the threat that he or she verbally made. Free speech should be free, and without recourse, unless it can be proven harmful or damaging in some way. A mere few words spoken in anger should not warrant a knock on your door accompanied with handcuffs.