Oh? You now have god like powers and can see the future? How nice.
Just as likely what would have happened if they had called the police is after losing the entire day just to have the cop go up to him and say "Hey buddy this is private land." They would have gone out the next morning and he would have shot them from ambush just as he did this time!
If he was capable of doing that over being asked to leave how much more angry was he going to be over having the police called on him?