Protesters dressed up as test rabbits (the equivalent of guinea pig in Hebrew), demonstrate against the Israeli government's Wisconsin Plan, in front of the Supreme court in Jerusalem, on April 25, 2010.
Photo Op: short for photo opportunity, originally referred to an opportunity to take a memorable and effective photograph of a politician, a celebrity, or a notable event.
The term has acquired a negative connotation, referring to a carefully planned pseudo-event, or a non-event that often masquerades as news.
This blog is called "Photo Op" and I hope this is where the resemblance to the above definition ends.