Says anyone should be able to see them. Try these:
http://www.flickr.com/photos/41200056@N02/3798600686/
http://www.flickr.com/photos/41200056@N02/3798600126/
worked for me, but I have a Flickr account and am signed in whenever I go to Flickr.
Flikr has flagged these as Obscene.
Secret Agent, ask them why.
Still doesn’t work. I don’t have a Flickr account.