Reports were there was a agitator imploring, "They can"t kill us all!". It was announced beforehand the NG would be unarmed, so no protection there. USSS counter sniper teams walk by with "Counter Sniper Unit" on their gun bags. Must mean there are bad guy snipers. Remember Las Vegas, guise?
Any normie with a sliver of intelligence figures out at that point which way the wind is blowing and gets the fuck out of Dodge ASAP.
The Antifa shitheads left over get rounded up by undercover assets in the crowd. Antifa shitheads now ready to snitch on who told them to be there and who signed the check.
My take on what went down.