“A Tree is thirsty.”
Yeah, but how do you reliably identify the sources of the needed fluids?
It's a target-rich environment.
Teachers, union organizers, college professors, columnists, bloggers, journalists, precinct captains, community organizers are all "soft targets. Most federal and state legislators and judges. Also, loudmouth Hollywood types typically only have a small security detail to keep stalkers and paparazzi at bay.