I admit you made me look up Gilad Shalit, which is, I suspect, your goal. While I have sympathies with the Israelis and any parent that has lost a child to politics, IMHO, this picture has an agenda other than the challenge.
Nice job. You've caught a lot of emotion and action without it looking random. I think the face of the woman in the front is an anchor for the crowd, which pulls it all together.