I think I'm just going to add commentary to my picture here. It sounds fun. This was taken a couple years ago at the Nixon Library in Yorba Linda. The sis is in the front doing the peace sign. Stereotypical to the people next to her, yes. That is why she did it. And yes, we are both going to Hell.
Moving on. I personally believe these people are discussing the purple tulips in their field of view. They are whispering however because they believe the woman behind them is a spy. You see, the peace sign is an international sign for 'spy.' (Look it up, and if you can't find it, don't panic. Remember, the international word for 'spy' is a long kept CIA secret therefore you won't be able to look it up.)
See, purple tulips are a rarity in the country where the man and woman come from. Purple tulips mean great fortune and money in this other country. They are worth more than gold and sell on the black market for hundreds more.
The large camera is actually a transport devise for tulip stems, seeds and stamens. (Why stamens? Because they can.) These people will then use the tulip parts and plant them making thousands more than the original parts they had. These people will be millionaires if all goes to plan.
I do believe the plan is for these two to pretend like tourists and when nobody is looking, take samples of the prized purple tulip. They will then continue to walk around the museum. All around are lookouts for these tulip takers. All the lookouts have large cameras and wear ridiculous polo shirts. Standard protocol. And the perfect getaway. Everyone gets into a large Mercades M Class and takes off onto the highway.
The perfect plan.