This was successful until about 9pm when it was starting to wind down. At that point the mob with placards, spray paint and megaphones turned up.
I would be interested in a source for this. Having said that, I thought it was still legal to carry placards and megaphones.
Opps, apologies for the typo on the time. 6pm obviously.
The evidence of placards, spray paint and sound systems are there in the numerous news reports, videos and photos.