Not sure what to think, seems like total assumption and just an irate parent making an ass out of himself. He had zero business handling it like he did, one thing to approach a guy and ask him WTF he is up to or going on, whole other thing to threaten him and video the whole thing AND post it on the WWW. Maybe he is in fact a creeper, or maybe in fact he is misunderstood as to why he is there all the time? Let the police handle it, by law they must question suspicious people if there are being reported.