Last Sunday's Observer claimed to expose how an officer from a secretive unit of the Metropolitan police" worked "undercover among anti-racist groups in Britain, during which he routinely engaged in violence against members of the public and uniformed police officers to maintain his cover". Despite this sensationalist introduction, "Officer A" does not describe his involvement in any violent incidents. No wonder. The organisation he infiltrated, Youth Against Racism in Europe (YRE) is a peaceful organisation of young people, which in the 1990s organised mass protests against racism and the BNP [British National Party]. YRE [has often faced] violence from the far right, and unfortunately also from the police. The police not only used violence against [YRE] demonstrations but also carried out a secretive, unaccountable and clearly expensive infiltration operation. They gained nothing from it. Far from being secretive [YRE] publicly advertised [its] events. The Observer's revelation is not unique. Christopher Andrew's The Defence of the Realm: the Authorized History of M15, published last year, also describes state infiltration of Militant, the National Union of Miners and others. Surveillance of peaceful protestors has mushroomed. Police brutality also, as the tragic death of Ian Tomlinson showed, is not a thing of the past.