I listened on ROA to a person who was there. This is what they said. It was also backed with video. What you think, unless you were there, is just what you think, so you do not need to correct me.
Also it was reported that people from many countries attended as Brussels is the heart of the EU.
Try to keep up, m’kay?
I looked some more and finally did find a couple of things that backed the 500K claim, but most had it an order of magnitude smaller.
If there really was video analysis to back up the larger, I’m interested. It would give hope. even 50K gives hope.