Brian,
You might want to contact the EFF. From time to time they take on cases like yours in the public interest. And I would think your critique of photojournalistic content would fall under the provisions of Fair Use. You differ from Dupree in two critical aspects:
1) The content as utilized by AP by its very posting is now public not private. So long as you continue to critique the photos and not use them for personal gain you should prevail. That is copyright law.
2) You differ from Dupree in that you operate in the public realm with public content. Dupree on the other hand has not relinquished her rights to her property and quite honestly she has not sought being a public figure it was thrust on her.
Contact EFF see if they are interested.
