Lots of people and maybe you suggested this was all a set up. No? There were several thousand people there. What was the big setup supposed to do?
The setup probably was to start some violence and blame it on the civilians.
That did not happen, so it was a good day for our side.
The secondary mission of the Feds was to let some newbies practice infiltration techniques in a “live” setting.
The newbies made mistakes as newbies do, and now their bosses will chew them out and teach them what they need to do better next time.