Poland gained independence at the end of World War I. In the April 1919 Pinsk massacre, during the Polish–Soviet War, the Polish garrison summarily executed 35 Jewish men without due process on the suspicion of plotting a pro-Soviet counterattack. It was a war crime never forgotten by the Jews of Pińsk. In the subsequent decade the city grew to 23,497 inhabitants as part of the Polesie Voivodeship in the Second Polish Republic. It was briefly declared the capital of the province in 1921 but a citywide fire resulted in the transfer of power to Brześć within months. Jews constituted over half the number of Pińsk residents, and 17.7% of the general population in the region. New Jewish schools were opened, as well as a clinic, a bank, an old-age home, and an orphanage. In 1939, following the Soviet invasion of Poland in accordance with the Molotov–Ribbentrop Pact, Pińsk and the surrounding territories were taken over by the Soviet Union. The NKVDsecret police conducted raids and shut down all synagogues and shops. Mass deportations to Siberia followed. At that time, the population became over 90% Jewish due to the influx of refugees from German-controlled western Poland. The area was annexed into the Soviet Byelorussian Republic after the Elections to the People's Assemblies of Western Ukraine and Western Belarus conducted in an atmosphere of terror.
German occupation
On 22 June 1941 Germany invaded the Soviet Union in Operation Barbarossa. Advance forces of the Wehrmacht entered Pinsk on 4 July 1941. Christian inhabitants welcomed the German army as liberators from the Soviet regime, greeting them with bread and flowers. Under new anti-semitic regulations, Jews were forbidden to leave the city or shop in the market and were required to wear armbands with the Star of David. Random killings, beatings, looting, requisitions, and abduction of Jews for forced labour took place. A Judenrat was formed on 30 July 1941. On the night of 4 August, 300 Jews were detained in order to compel the Council to assemble Jews between the ages of 16 to 60, ostensibly for a labour detail. Thousands of men were marched out of the town and shot in prepared trenches. In the next two days, the Germans rounded up additional Jews, including younger boys and some women, who were also shot. By 8 August 1941, 8,000 Jews were murdered in this manner.
Ghetto resistance and liquidation
The ghetto in Pińsk existed only for half a year, officially between 20 April and 29 October 1942, much shorter than most Jewish ghettos in German-occupied Poland. The relocation action took place on 1 May 1942. Food was rationed, and a barbed-wire fence erected. The following month, in June 1942, the first murder operation took place there, with 3,500 Jews rounded up in Pińsk and nearby Kobryń, and transported to Bronna Góra to be shot. This was the location of secluded massacres of Jews transported by Holocaust trains from the Brześć Ghetto as well. , present-day Belarus, with marked location of mass killings of Jews The Pińsk Ghetto's population swelled, with Jews deported en masse from all neighbouring settlements until food ran out. The liquidation of the ghetto began on 28 October 1942. The German motorized battalion met armed resistance from underground fighters, which came as a complete shock to the German police. The insurgents were shooting from secretly set-up bunkers, so reinforcements were brought in and massacres followed. According to the Nazi-issued final report, 17,000 Jews were killed during the insurgency, bringing the total to 26,200 victims before the ghetto's closure. Ten thousand were murdered in one day and the rest on the next day, with few managing to escape into the forest. The ghetto ceased to exist entirely. Not a single house was burned down. After the war, Poland's borders were redrawn and Pinsk became part of the Soviet Union. Some of the Jews who survived the Holocaust returned, but they were prohibited from reopening a synagogue. In the 1970s and 1980s, most of them emigrated. Pinsk became part of independent Belarus in 1991 after the collapse of the Soviet Union. By 1999, only 317 Jews lived in the city.