 Honecker returned home on 11/12 September and the police tactics became more aggressive regarding posters critical of government, which were confiscated in raids and/or banned in population centres such as Leipzig, Torgau and Dresden.Roughly two months after the Olof Palme Peace March, in late November 1987, the Stasi raided the in Berlin, which had been set up in the cellar of a church building at the beginning of September 1987, just as peace activists were setting out on their march in the north of the country.The Environment Library was already becoming known as a meeting point for East German opposition groups, and in their raid the Stasi arrested a number of activists.