Something else was odd. They placed the flags in front of 1776 only to remove them and walk away with them. I found the walking away most interesting. Yes, multiple layers of messages.
SS1
I did a search on “US Army Marching Band with Reenactors, 16th St., Washington D.C.” and the only two results that made sense were the one youtube video (now up to just over 100 views) and some very minimal looking website that had the same video with no info, posted by the same woman who put up the youtube. Source cited on the site below is the youtube link. Cannot find anything else.
I watched the entire video again with DH and it is extremely mysterious, so much silence. Very symbolic. No audience. Comments turned off for the youtube.
Here’s her channel, has almost all music concerts:
https://www.youtube.com/channel/UCpBY21_yciFr3hT0z0hlETw
https://www.youtube.com/watch?v=-6nHRwA8fng