Have you reported these incidents to the police, it is obvious that there is a problem around this area, If it was me, I would have no hesitation in reporting it. I used to walk my son to school down the middlewood way, there have been one to many reports of unsavoury people around this area, I will not walk down there now, but unless everybody reports an incident, no matter how insignificant they think it is, the people responsible will not be caught. It is not fair, that myself and my family and other families cannot enjoy the middlewood way without feeling threatened. If you see something suspicious report it, if its nothing then so be it.