Comment First Swatting Victims Were Conservative Bloggers (Score -1, Troll) 350
Among the first instances of swatting I was aware of were conservative bloggers like Aaron Walker, Erick Erickson and Patrick Frey, all of whom were working to expose convicted felon and "Speedway Bomber" Brett Kimberlin.
There may have been earlier instances, but those are the first I'm aware of.