Piers Corbyn was arrested for breaking a brand new law that had been brought in, without parliamentary scrutiny, within the previous 24 hours.
https://www.crowdjustice.com/case/defend-the-right-to-protest/?fbclid=IwAR22cun-5HgfS2EB1l5FtR10PKc6jxadG9zwVkMq61xQpBk9xxM-VZD8928