Hey Mate.
This is a very good introduction to self-defense. You focussed a lot on avoiding conficts which is very important. I would like to know more about that aspect. One thing that you can touch on is how to help someone when you see a conflict. One part of the oh-I-just-look-away mentality may come from the fact that they don't really know how to act properly. Of course just instinctly shouting would help but to do that some might want to know how to act after that to avoid further conflicts.
Oh, and I like the way you describe situations with photos.
It has been a honor to read your article!
Cheers