the Republic of Poland) Black Thursday – timeline of events (City of Poznań) 50 years since the Poznan uprising (International Viewpoint online magazine) 1956 in Poland 1956 protests 1956 riots Anti-communism in Poland Cold War rebellions Conflicts in 1956 Eastern Bloc 1956 protests June 1956 events in Europe Massacres in Poland Mass murder in 1956 Poland–Soviet Union relations Protests in Poland Rebellions in Poland Riots and civil disorder in Poland Urban warfare 20th century in Poznań