Your trespasser analogy is flawed. You obviously do not understand my logic. Your property rights would trump the trespasser's free speech rights, when he is on your property. In fact I could use your analogy to illustrate my point. You have a right to be secure in your person and property. The police should actually assist you in aborting him from your property. If his life depended on remaining in your house and being obnoxious, that would be his tough luck. If he can sustain his own life out on the street, he must be allowed the attempt. He may have to temporarily become a ward of the state in that case. They cannot violate his person in removing him. They can effect a separation between the two soveriegns.
The key is to remember that we each have a right to be secure in our person. No unwanted attachments allowed.
Secure in our person.
Governmentally protectable life begins when no other person's body is required to sustain us.
Your biggest problem is your ignorance of what the Constitution actually says.
The First Amendment protects political speech in the public square.
Your house is NOT the public square, and obnoxious is not political speech.
Your First Amendment rights end at the door step of my private property...that's why Jim Robinson can kick out anyone he doesn't want in HIS forum.