One of the things I find worrying is that some people who went along to that march (and it looked huge, despite police reports of 10,000 or less) will not have been full loon, but were maybe drawn in because of doubts about the wisdom of the government's Covid strategy, lost their jobs, been furloughed, got into debt, their businesses tanked etc. Then they meet loads of people at the march and inevitably will be exposed to full conspiraloonery, either from demagogues /grifters making speeches or loon leaflets etc. I've seen several people tweeting about what a friendly and supportive atmosphere it was there. This will only make the crazed theories seem more acceptable. "Well I know it sounds bizarre but he was a really nice bloke".
I was looking back on Urban and several months ago these demos were attracting very few people, hundreds at the most.
But it's grown and grown. Like a virus