It's true. If it makes the media that someone was there, they will go arrest them now if they didn't already.

I wasn't really thinking about the size of the crowd, but I also don't know how they decided to whom to arrest. It seems like plenty of people have been charged with just being there. People have also been charged for not being there. But I guess they wouldn't be J6ers really -- just someone the government has charged with a crime.