 In 1978, he participated in the informal discussion group "Doświadczenie i Przyszłość", which brought together pro- and anti-government intellectuals.In 1991, Szacki co-founded the Solidarność Pracy (Labour Solidarity), a short-lived social-democratic party formed by left-wing Solidarity members, which merged with the Labour Union "(Unia Pracy)" the following year.In 1998, he prefaced a book about the Gdańsk-based milieu of Polish liberals edited by the politician Donald Tusk (then a member of the Freedom Union).