Greek Civil War, settled in Szczecin in the following years. Voivodeship capital in Poland (after 1945) Old inhabitants and new settlers did a great effort to raise the Szczecin from ruins, rebuild, reconstruct and extend the city's industry, residential areas but also the cultural heritage (e.g. the Pomeranian Dukes' Castle in Szczecin), and it was still harder to do this under the communist regime. Szczecin became a major industrial centre of and a principal seaport not only for Poland (especially the Silesian coal) but also for Czechoslovakia and East Germany. The people of Szczecin supported and raised medical supplies and donated blood for the Hungarian Revolution of 1956. In December 1956, Szczecin was the site of a mass protest against the Soviets and communist rule and in solidarity with the Hungarian Revolution. Protesters seized and demolished the Soviet consulate. Protesters were later persecuted and imprisoned by the communists. In 2016, to commemorate the 60th anniversary of Polish solidarity with the Hungarians, the Hungarian-funded "Boy of Pest" monument was unveiled in Szczecin. Szczecin together with Gdańsk, Gdynia and Upper Silesia was the main centre of the democratic anti-communist movements in first in March 1968 and December 1970. The protesters attacked and burned the Polish United Workers' Party regional headquarters and the Soviet consulate in Szczecin. The riots were pacified by the secret police and the armed forces; see: Coastal cities events. After 10 years in August 1980 the protesters locked themselves in their factories to avoid the bloody riots. The strike was led by Marian Jurczyk, leader of the Szczecin Shipyard workers and it proved successful. On 30 August 1980, the first agreement between the protesters and the communist regime was signed in Szczecin, which paved the way for the creation of the Solidarity movement, which contributed to the fall of communism in Central and Eastern Europe. Further protests and strikes took place in 1982 and 1988. From 1946 to 1998 Szczecin was the capital of the Szczecin Voivodeship, but the region's boundaries were redrawn in the administrative reorganizations in 1950 and 1975. Boundaries of the Szczecin City were extended by joining with Dąbie in 1948. Since 1999 it is the capital of the West Pomeranian Voivodeship. Communist-dominated municipal administration was replaced by a local government in 1990, and the direct election of the city president (mayor) was introduced in 2006. Demographics Since the medieval Christianization of the region, the population