Ulrich Ebert, born in 1947 in Welzow, called the suppression of the Prague Spring an invasion, whereupon he was arrested and sentenced to 18 months in prison. In reaction to this verdict, Ebert's mother immediately contacted the Head of State, Walter Ulbricht. She protested that her son was treated unfairly compared to others under the same charge, including Florian Havemann, who, as the son of the famous politician Robert Havemann, was issued only a probation following a show of solidarity with Czech demonstrators in Berlin.
Shortly thereafter, Ulrich Ebert was released from investigative custody but was put on probation. Since 2012, he has offered guided tours through the memorial Belrin-Hohenschönhausen.