Under the pseudonym "Simeon and Agnik", in 1983 Klimek wrote the activist's song "Feniksa" (Phoenix). In 1986, Klimek was involved in the reactivation of Solidarity and became a member of the Regional Executive Committee for the union. Klimek initiated the Gorzów Committee for the Memory of the Victims of Katyn and was made an honorary member of Gorzów's Katyn Families.