True, and actually the criminal status of trespass varies as well - it's usually a misdemeanor but is sometimes a felony, so my original comment was a bit vague. But the bit you quote encapsulates what I was saying about force.
People have got away with shooting others for merely approaching a dwelling (eg http://en.wikipedia.org/wiki/Death_of_Yoshihiro_Hattori) but attitudes about this seem to be shifting, so if you do feel impelled to shoot someone I would suggest calling the police immediately rather than relying on presumptive justifications.
I don't disagree really with anything you said -- just wanted to note that state laws aren't consistent on this, and in many cases aren't fully clear at a glance.
People have got away with shooting others for merely approaching a dwelling (eg http://en.wikipedia.org/wiki/Death_of_Yoshihiro_Hattori) but attitudes about this seem to be shifting, so if you do feel impelled to shoot someone I would suggest calling the police immediately rather than relying on presumptive justifications.