In addition to being an incompetent arsonist, the person responsible is also an incompetent political terrorist. Cape Cod is the top vacation spot for modern elitist liberals.
All he (they) is doing is forcing liberals to realize what a bunch of violent loons their fellow liberals really are.
Actually, that would be Martha's Vineyard and Nantucket (both islands, off the coast). That's where The Beautiful People tend to go. The Cape proper attracts all kinds and also is home to some of the more "conservative" towns in the state.