If this was done by bored teenagers randomly vandalizing whatever is closest to them (as those darn teenager are wont to do, according to my father), then this is just frustrating. If it was adults passively-aggressively (or is it passive-aggressively?) acting out some anticycling feeling, then this lowers my faith in humanity yet another notch. However, I suspect the culprits are a cross between the former two categories: teenaged minds with birthdates between 1973-1983 listed on their driver's licenses. And in this case my faith is humanity is frustrating lowered two notches.