Vandalism - Why do people do it?

Vandalism, it is happening again. Today we discovered that pickup trucks had run over seedlings along the south side of the ramp, and 4-wheelers had been running along the stream bank, disrupting the river bank. In addition, we found seven watering cans that had been stomped with a shoe or boot. (Click on photographs for close up of damage)

There was evidence that pick-up trucks were 'mudding' again. They showed complete disregard for the new seedlings planted on the side of the drive. Seven (7) watering cans had either been run over or stomped on with a shoe or boot. Three (3) seedlings had been run-over by the pickup tires.