That's what I was thinking, it doesn't have to be the truth, just believable. Besides, the main part of the whole thing is trying to capture the moment.
I'm probably not going to start on this for a while, because I need to get back into the swing of modeling (like I said I haven't done this for 10 years

and need to practice). My first project is going to be an M1A1, my favorite tank, and something I have previously built (albiet without painting) ; I've ordered the kit and tools and such from squadron.com and am ANXIOUSLY awaiting its arrival. Who knows, it may end up in the diorama (IIRC, there was a tank parked close by...I'll have to reexamine some photos and/or video of the event). Maybe I'll also get started on the diorama base and some of the spires in the square and stuff, saving the statue and tank for last.
Cheers