Its built into us to think we are the center of the universe. When we walk into a store or pull out our camera we get this "are they watching me" feeling. The truth is that they are in their world and we are in ours. The guy you thought looked at you funny was probably trying to calculate his taxes for this quarter and the lady who turned to look might have gotten a mosquito in her eye.

Live your life, do what makes you happy and pay no attention to anyone else.

When i read "pedo" in your post it made me think of peep show. The guy on the right.. is picked on by the neighborhood kids whenever he enters or leaves his building. They yell PEDO in one of the confrontations.