Because it is NOT natural to be prowling around an old closed business at night. You look suspicious (not to mention ridiculous).
The Gettysburg Times reports that the Thanksgiving night ghost tour ended with two tourists and their guide being detained at gunpoint.
A patrolman passing a closed store in Gettysburg says he saw flashlights inside, so he went in and handcuffed and searched the three ghost hunters.
The original story is here in the Gettysburg Times but requires subscription.
At 10:08 p.m., Patrolman Thomas Knaper reported that he was passing Servant’s Old Tyme Photos, 237 Steinwehr Ave., when he saw the front door of the business closing and then “a flashlight being used inside” when no other lights were on.
The people did have permission. The location is where a Union general was brought, fatally wounded, during the Battle of Gettysburg. He died.
Gettysburg is overrun with ghost stories and ghost tours to the point where it nearly obscures the historical aspect. I have a bit of a problem with that. It cheapens the memory when ghost hunters are in a historic building requesting by name that the spirits show they are there by doing stupid trick with flashlights and electrical fields.