I had an asswipe neighbor who'd always park his fucking truck and wreck branches on my tree. Maybe I should do something like the following: my parents had a tree where people would always reach up and break off branches so I got some gloppy stuff called "Tanglefoot" (to keep bugs off fruit trees) and coated the lower branches with it. So when the smacked-asses grabbed a branch they'd get this sticky-as-hell-non-water-soluable shit on their hands. The best part is that you could say "It must be sap from the tree." Yep, it stopped the morons breaking branches!