[doktrin]

> If you're standing in the crowd most people will take a backpack off & put it at their feet?

I do. Both to alleviate the weight, minimize the space I take up as well as reduce the chance of someone slipping a hand inside my bag. Likewise when I'm carrying a messenger.

I'm a little weary of this set of pictures. It seems like he's edging to the front of the crowd, whereas I thought the explosions occurred a little further back. Moving to the front would be a great way to get stuck, much like ending up against the rails at a concert.

Anyhow, I think crowd sourcing this kind of investigation can potentially be of great help to law enforcement, but I really hope the internet community keeps itself in check when it comes to determining guilt & doling out punishment.