A ‘happening’ dedicated to eight dissidents who on August 25, 1968, held a public protest on Moscow’s Red Square against the Soviet-led invasion of Czechoslovakia was held in Prague on Saturday. Eight modern activists recreated the events of half a century ago, including by bringing copies of the banners they held, such as one proclaiming “For your freedom and ours”, unfurled by Pavel Litvinov, whose grandfather Maxim Litvinov had been Stalin’s foreign minister in the 1930s.