The protest was organised by Piers Corbyn, brother of Jeremy Corbyn. He's been a leading anti-lockdown, anti-mask, anti-vax etc campaigner and agitator. He's been leading the claims that COVID19 is a "hoax" all year long.
Don't take my word for it, take his word for it.
Twitter Link
Or view the nutjob's website: https://www.stopnewnormal.net/