 Complete the following phrase:  In March 1968 he participated in a meeting at Halle held to discuss the governments continuing campaign of persecution against Robert Havemann who at that time was regarded as a dissident, being held under house arrest following the loss of his Party Membership and university post. At the meeting Eisenfeld openly criticised the East German draft constitution which the government had published as part of a move to align East Germanys constitution more closely with the realities of its power structure. He also expressed his support for free expression and for the 