Something else about this that doesn't sit right at all is that this has been on the cards for weeks now, it's been on many different social media platforms and you don't get numbers like that who just turn up on the off chance, so why was the security so poor?
For a Black Lives Matter peaceful demonstration last June Trump called in heavy security. For this he did nothing other than use words that could mean to his supporters attacking Congress, mainly white, that they were doing what he wanted. It was one of his staff who called in more protection, but that was already too late.