During a pro-Palestinian demonstration in Trafalgar Square, London, police arrested 523 individuals supporting the banned group Palestine Action, which was designated a terrorist organization in July 2023. The protestors, aged between 18 and 87, held placards advocating for the group, leading to their arrests under laws prohibiting support for the organization. The High Court had previously upheld a challenge to the ban, stating it infringed on freedom of speech, prompting the government to appeal. Activists expressed their determination to continue protesting against what they perceive as government complicity in violence in Gaza. The recent arrests have drawn criticism from organizations like Amnesty UK, which labeled them as detrimental to civil liberties, highlighting concerns over the legality of the police's actions amidst ongoing debates about the right to protest in the UK.