“The Grand Chamber of the ECtHR recently tackled the question of whether the police tactic of ‘kettling’ (verb, UK, of the police – to contain demonstrators in a confined area) amounted to a deprivation of the liberty of four applicants within the meaning of Article 5(1) of the ECHR.”
UK Human Rights Blog, 2nd April 2012
Source: www.ukhumanrightsblog.com