Reminds me of a trail conflict issue in Ashland, Oregon a few years back. Ashland has a beautiful large trail system used by hikers and mountain bikers. As in other locales, the 2 groups have some conflict. Most hikers and bikers are friendly and courteous to one another but there are some jerks in both groups as well. However, one guy (actually a psychologist at the local VA clinic) took jerk to a new level and put a high tension wire between 2 trees at neck height on a high speed section of a mountain bike downhill trail. Fortunately, he was caught in the act. Obviously, he could have easily killed someone. IIRC, he was charged and found guilty but just got a slap on the wrist