My good friend, Michael Johnston, posted a blog and a link on this site The Online Photographer to my blog about Street shooting and tacit approval. That blog got 50 or so very quick responses that broadened the original discussion a great deal. You can read that blog and the interesting comments, here.
The comments were interesting enough that Michael posted a second blog with counterpoints. All of it is polite, well reasoned and strongly felt. If you like my take you might want to see what his readers think.
I presume that there's a lot of cross over between our blogs. There should be. He writes stuff that I find interesting. Check it out.
The shot above was done in a Paris Metro station. Just to date this image, the slats on the escalator were made of wood. I did not get permission from the subject.....