Looking for “people” and “network” images for a magazine article

I'm looking for two images for a magazine article. This is the idea:

(1) The first image would be a photo of people, a crowd, something to the tune of:

People
http://www.flickr.com/photos/victoriapeckham/164175205/

CC Attribution: victoriapeckham

But I'd like perhaps a larger crowd, more people in a larger space.

(2) The second image would be a computer visualization of a network, something like:

Network

http://www.flickr.com/photos/marc_smith/3976415352/

CC Attribution: Marc_Smith

But I'd like this to be more, ehm… "beautiful", I suppose.

We would then overlay the computer image on top of the people photo. The idea is quite straightforward: to visualize the notion that real people are nodes in a network.

In the spirit of social media and user generated content, I'd prefer images under Creative Commons Attribution license.

Any great pointers, anyone?

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