My thing is that if it is on the internet view whatever you wish in the domain of your own home. Don't do it in public. Now passing out pictures of little children should be illegal and taking random pictures of children should be as well. Posting them on the internet should have penalties. However viewing pre-loaded picture should not be taken into offense. As long as the pictures are not being redistributed I don't see a big problem.
Grab a bible, tear out some pages, make paper shuriken out of the pages and throw the shuriken at them. I would say this is a good method.
Otherwise contact a psychologist or psychiatrist. I don't know the specifics for them so try both.
Not really. If you walk into a public area you follow public rules. If I take an image I only have to blur out things that can endanger you like license plate. In public if I record a video I can record you walking down the steet because you are in public view. Police watch you with camera in public but a civilian can't? Both parties can. Why? Its the public.
It isn't an invasion of privacy if the children are in public view. You have a right to privacy where privacy is required or permitted. For example a restroom or a changing room. However if you are just walking the streets, most likely, pictures can be taken.