Re: Dangerous, stupid and highly illegal"
Which came first? The airport or the real estate development?
Frankly, they should have passed a law or regulation that nothing other than airport support structures could be built within a few miles of an airport or at least in the takeoff and landing flight paths.
Second, yes, interfering with aircraft operations is the very definition of terrorism and always has been since the 1940s when it was then labeled as sabotage.