Cuban Crisis: Demonstrators struggle to steps of US Embassy. 'Peace' and 'No War over Cuba' are two of the slogans seen on placards outside the United States Embassy (background) , Grosvenor Square , London when demonstrators pressed their way forward to the Embassy steps and its strong police cordon . The demonstrators , estimated to number 2,000 , most of them in their teens or early 20's , were protesting against the American blockade of Cuba , announced in a speech to the American people by President Kennedy last night . 23rd October 1962