I strongly suspect this is clickbait, but given reasonable doubt you still need education in lawful drone operations.
From your description you were breaking at least one rule and that is flying beyond Visual Line of Sight. At 1/2 mile away most DJI drones would not be visible to the naked eye.
A recreational pilot now has to follow the rules of a Community Based Organization and I am not aware of any that allow you to fly over crowds such as the fair.
If this story is true you have a case for assault and battery by the security guard that manhandled you before the uniformed police arrived.
If this thread goes off the rails it will be closed down. So everyone measure your responses to this thread.