In the evening of the 9th November 1989, the East German government opened the Berlin Wall after central committee spokesman Guenter Schabowski mistakenly announced that GDR citizens could cross into West Berlin with immediate effect. Surprised border guards, who had been given no information about the new rules, were overwhelmed by the appearance of thousands of East Germans who wanted to cross. Although the border remained closed for around three hours, by 11pm the checkpoint at Bornholmer Strasse had been opened. Others followed soon after.
Communist Hungary had opened its Austrian border in September, which had encouraged East Germans to push for reform in their own country. Eventually, the weekly ‘Monday protests’ that attracted hundreds of thousands of people forced the government to prepare the new travel policy.
Although the new policy had been agreed by the Politburo on the afternoon of the 9th November, their intention was to implement the policy the next day so that border guards could be briefed and crossings managed in a controlled manner. However, Schabowski had not been at the Politburo meeting and so was only able to base his announcement on notes from a piece of paper handed to him shortly before the press conference. This explains his mistake over the timing of its introduction.
The announcement led huge crowds to begin gathering at the checkpoints, with thousands pouring through the border after the guards finally relented. Ironically, West Berliners still had to have a visa in order to cross to the East. Therefore, for a few weeks after the Wall was opened, East Berliners actually had greater freedom of movement than Westerners.