It is now clear yesterday was long in planning. A bandstand was built; Giuliani and Trump spoke to the mob first, both openly (Guiliani) and by indirection (Trump still wily) urging the mob to attack the building and people inside. To get people there took considerable planning. It's also clear that quite deliberately National Guard was withheld, and when the police came in, they were as gentle as they could be.
A small photo of the bandstand early on December 6th, the crowd waiting for Trump & Co to arrive
Keep hope alive