This is dense crowd. It's much less when bombing happened. source: http://www.davesweb.cnchost.com/nwsltr118.html
Do you seriously think that any of them who could run and knew nothing about how to help the injured would calmly remain there after the bloody bomb went off? Seriously, you should think more about these things before posting such a tightly-packed bucket of crap on the web and calling it "evidence." It might be slightly less moronic to have posted surveillance video from the ten seconds prior to the explosion. This is bollocks.