Roger Waters has voiced his support for Palestine Action, risking prosecution and a potential 14-year prison term, since the organization is now proscribed as a terrorist group in the UK under the Terrorism Act 2000. As of 5 July, membership of Palestine Action, or expressing public support for the group, is a criminal offence in Britain. On 5 July, police in London arrested 29 people in Parliament Square for holding placards stating, "I oppose genocide, I support Palestine Action." In a video post on 5 July, former Pink Floyd legend Waters says, "For the record, I support Palestine Action," calling them "a great organization" and stating the "non-violent" group are "absolutely not terrorists in any way." Waters then displays a piece of cardboard: ROGER WATERS SUPPORT PALESTINE ACTION' and "Parliament has been corrupted by agents of a genocidal foreign power! STAND UP AND BE COUNTED. IT'S NOW!!!" The cardboard is dated "5th July 2025."