Nothing could have been more in contrast to the colour and cacophony of that occasion than the dark, dank tunnel under the Elbe in Hamburg, which Guérin visited with his communist comrades several weeks later. Guérin also visited the slums where the men lived in ‘worm-eaten wooden houses’ and where on the walls could be seen defiant graffiti – ‘Death to Hitler’ and ‘Long Live the Revolution’.9 There were apparently still some places left in Germany where even the Nazis did not venture.

