During his second term, Livingstone continued his support for London's bid to host the 2012 Olympic Games, playing a crucial role in securing vital Russian support for the bid. On 6 July 2005, in a ceremony held in Singapore attended by Livingstone, London was announced as the victor, resulting in widespread celebration. The following day, British-born Islamist suicide bombers undertook three attacks on the Underground and another on a bus, killing 52 civilians. Livingstone gave a speech from Singapore denouncing the attackers as terrorists, before immediately returning to London. Informing the BBC that Western foreign policy was largely to blame for the attacks, his response to the situation was widely praised, even by opponents. Fearing an Islamophobic backlash against the city's Muslim minority, he initiated an advertising campaign to counter this, holding a rally for inter-community unity in Trafalgar Square. A second, failed suicide bombing attack took place on 21 July, and in the aftermath police officers shot dead a Brazilian tourist, Jean Charles de Menezes, whom they mistook for a bomber. Police initially misrepresented the killing, resulting in widespread condemnation, although Livingstone defended the actions of Metropolitan Police commissioner Ian Blair.