near the Cenotaph in October, without police authorisation. In 2006, the comedian and political activist Mark Thomas attacked this section of the act by organising several protests within the area, within the confines of the law. His most notable was when he organised 21 protests over the course of a single day within the area. This act got Thomas into the Guinness Book of Records for taking part in the most protests in a single day. However, as the first and last protest took place in the same location, only 20 protests are recognised by Guinness. In January 2007 Tate Britain opened State Britain, an installation by artist Mark Wallinger that recreated the display confiscated by the police from Brian Haw's protest. The Tate press release on the exhibition mentioned that the Serious Organised Crime and Police Act 2005 prohibited "unauthorised demonstrations within a one kilometre radius of Parliament Square" and that this radius passed through the Duveen Hall, literally bisecting Wallinger's exhibit. Wallinger marked this on the floor with a black line running through the Tate. Press reports dwelt on the potential dangers of this infringement, speculating that the police might even remove the half of the exhibit on the "wrong" side of the line. Charles Thomson of the Stuckists art group wrote to The Guardian, pointing out that the exclusion zone ended at Thorney Street, 300 yards before the Tate. Gordon Brown said that he planned to look again at this section of the SOCPA, meaning that protesters would eventually be able to protest freely in the kilometre-radius of parliament without prior authorisation being needed. In October 2007, the Home Office published a public consultation document, Managing Protest Around Parliament, which "takes another look at sections 132–138 [of SOCPA] and explores whether there is another way to address the situation that would both uphold the right to protest while also giving police the powers they need to keep the peace". Campaigners are worried that this document contains new threats to freedom of assembly and the right to protest in that is suggests that there could be "harmonisation of powers to manage marches and assemblies" throughout the UK. Sections 132 to 138 of the Act were repealed by the Police Reform and Social Responsibility Act 2011, which provides for a different scheme of "prohibited activities" on Parliament Square. Harassment SOCPA also amended the Protection from Harassment Act 1997 so