Don't know about Missouri but in Florida the first thing I'd do is get a restraining order put on him with a 500 foot no trespass requirement. When you apply for the order make sure you include the fact that he made death threats to you and endangerment to your entire family (burning down the house). With that on record and in the trial records when he crosses onto your property, the castle doctrine comes into effect (at least here in Florida) With all the background on this guy in court documents, "I feared for my life!" will carry a lot of weight in your defense.
To not stand against injustice is to stand for it.
Don't confuse my personality and my attitude.
My personality is who I am, my attitude depends on who you are.