I decided to capture some of it on my phone and, had my hand not turned blue with the cold wind, I'd have filmed more. Still, what you have here is fairly representative. Check out the other people's videos on Youtube for other footage of this and other venues.
Here's what the Head Heritage site had to say about the choice of venue:
"On August 16th, 1819, the huge crowd of 80,000 people, which had gathered in Manchester’s St. Peter’s Field to protest about the price of bread due to the unfairness of the new Corn Laws, were brutally attacked by cavalry fresh from the Battle of Waterloo who’d been sent to police the situation. With over 700 injured and 15 dead, the incident became known as the Peterloo Massacre and led to the forming of the Manchester Guardian."
And here's the footage I took:
And the highlight - parts 3 and 4 are one track (I missed the first 5 or 10 minutes I'm afraid) split into two, incorporating a version of Pristeen and the legendary "face solo"...
Stills from the video are also on Flickr