[The magazine spells "apologize" with an S. British spelling perhaps? But it seems both spellings are correct.]
I think this might be a good page to carry with you for street photographers, at least in the UK, in case a policeman or security guard tells you that you are not allowed to photograph in a public place.
It is a scan from Professional Photographer, the February 2008 issue.
With the possible exception of France, which has some privacy laws, I think the whole of the Western world pretty much has full "freedom of cameras" in public places.
Quote: a spokesman from the Bureau of Freelance Photographers says:
"[...] in a public place you are allowed to photograph anyone or anything you like. Ironically, it's often the police who aren't clear about this."