20th century
With the opening of a fifth production hall in 1907, the Leipziger Baumwollspinnerei became the largest cotton mill company on the continent, housing over 240,000 spindles. Yearly production surpassed 5 million kilograms of yarn.
During World War I, in 1917, the American Consulate was closed, and its building became a temporary place of stay for Americans and Allied refugees from Serbia, Romania, and Japan.
During the 1930s and 1940s, music was prominent throughout Leipzig. Many students attended Felix Mendelssohn Bartholdy College of Music and Theatre (then named Landeskonservatorium.) However, in 1944, it was closed due to World War II. It re-opened soon after the war ended in 1945.
On 22 May 1930, Carl Friedrich Goerdeler was elected mayor of Leipzig. He later became an opponent of the Nazi regime. He resigned in 1937 when, in his absence, his Nazi deputy ordered the destruction of the city's statue of Felix Mendelssohn. On Kristallnacht in 1938, the 1855 Moorish Revival Leipzig synagogue, one of the city's most architecturally significant buildings, was deliberately destroyed. Goerdeler was later executed by the Nazis on 2 February 1945.
Several thousand forced labourers were stationed in Leipzig during the Second World War.
Beginning in 1933, many Jewish citizens of Leipzig were members of the Gemeinde, a large Jewish religious community spread throughout Germany, Austria, and Switzerland. In October 1935, the Gemeinde helped found the Lehrhaus (English: a house of study) in Leipzig to provide different forms of studies to Jewish students who were prohibited from attending any institutions in Germany. Jewish studies were emphasized and much of the Jewish community of Leipzig became involved.
Like all other cities claimed by the Nazis, Leipzig was subject to aryanisation. Beginning in 1933 and increasing in 1939, Jewish business owners were forced to give up their possessions and stores. This eventually intensified to the point where Nazi officials were strong enough to evict the Jews from their own homes. They also had the power to force many of the Jews living in the city to sell their houses. Many people who sold their homes emigrated elsewhere, outside of Leipzig. Others moved to Judenhäuser, which were smaller houses that acted as ghettos, housing large groups of people.
The Jews of Leipzig were greatly affected by the Nuremberg Laws. However, due to the Leipzig Trade Fair and the international attention it garnered, Leipzig was especially cautious about its public image. Despite this, the Leipzig authorities were not afraid to strictly apply and enforce anti-semitic measures.
On 20 December 1937, after the Nazis took control of the city, they renamed it Reichsmessestadt Leipzig, meaning the "Imperial Trade Fair City Leipzig". In early 1938, Leipzig saw an increase in Zionism through Jewish citizens. Many of these Zionists attempted to flee before deportations began. On 28 October 1938, Heinrich Himmler ordered the deportation of Polish Jews from Leipzig to Poland. The Polish Consulate sheltered 1,300 Polish Jews, preventing their deportation.
On 9 November 1938, as part of Kristallnacht, in Gottschedstrasse, synagogues and businesses were set on fire. Only a couple of days later, on 11 November 1938, many Jews in the Leipzig area were deported to the Buchenwald Concentration Camp. As World War II came to an end, much of Leipzig was destroyed. Following the war, the Communist Party of Germany provided aid for the reconstruction of the city.
In 1933, a census recorded that over 11,000 Jews were living in Leipzig. In the 1939 census, the number had fallen to roughly 4,500, and by January 1942 only 2,000 remained. In that month, these 2,000 Jews began to be deported. On 13 July 1942, 170 Jews were deported from Leipzig to Auschwitz concentration camp. On 19 September 1942, 440 Jews were deported from Leipzig to Theresienstadt concentration camp. On 18 June 1943, the remaining 18 Jews still in Leipzig were deported from Leipzig to Auschwitz. According to records of the two waves of deportations to Auschwitz there were no survivors. According to records of the Theresienstadt deportation, only 53 Jews survived.
During the German invasion of Poland at the start of World War II, in September 1939, the Gestapo carried out arrests of prominent local Poles, and seized the Polish Consulate and its library. In 1941, the American Consulate was also closed by order of the German authorities. During the war, Leipzig was the location of five subcamps of the Buchenwald concentration camp, in which over 8,000 men, women, and children were imprisoned, mostly Polish, Jewish, Soviet, and French, but also Italian, Czech, and Belgian. In April 1945, most surviving prisoners were sent on death marches to various destinations in Saxony and German-occupied Czechoslovakia, whereas prisoners of the Leipzig-Thekla subcamp who were unable to march were either burned alive, shot, or beaten to death by the Gestapo, SS, Volkssturm, and German civilians in the Abtnaundorf massacre. Some were rescued by Polish forced laborers of another camp; at least 67 people survived. 84 victims were buried on 27 April 1945, however, the total number of victims remains unknown.
During World War II, Leipzig was repeatedly struck by Allied bombing raids, beginning in 1943 and lasting until 1945. The first raid occurred on the morning of 4 December 1943, when 442 bombers of the Royal Air Force (RAF) dropped a total amount of almost 1,400 tons of explosives and incendiaries on the city, destroying large parts of the city centre. This bombing was the largest up to that time. Due to the close proximity of many of the buildings hit, a firestorm occurred. This prompted firefighters to rush to the city; however, they were unable to control the fires. Unlike the firebombing of the neighbouring city of Dresden, this was a largely conventional bombing with high explosives rather than incendiaries. The resultant pattern of loss was a patchwork, rather than wholesale loss of its centre, but was nevertheless extensive.
The Allied ground advance into Germany reached Leipzig in late April 1945. The U.S. 2nd Infantry Division and U.S. 69th Infantry Division fought their way into the city on 18 April and completed its capture after fierce urban action, in which fighting was often house-to-house and block-to-block, on 19 April 1945. In April 1945, the Mayor of Leipzig, SS-Gruppenführer Alfred Freyberg, his wife and daughter, together with Deputy Mayor and City Treasurer Ernest Kurt Lisso, his wife, daughter, and Volkssturm Major and former Mayor Walter Dönicke, all committed suicide in Leipzig City Hall.
The United States turned the city over to the Red Army as it pulled back from the line of contact with Soviet forces in July 1945 to the designated occupation zone boundaries. Leipzig became one of the major cities of the German Democratic Republic (East Germany).
Following the end of World War II in 1945, Leipzig saw a slow return of Jews to the city. They were joined by large numbers of German refugees who had been expelled from Central and Eastern Europe.
In the mid-20th century, the city's trade fair assumed renewed importance as a point of contact with the Comecon Eastern Europe economic bloc, of which East Germany was a member. At this time, trade fairs were held at a site in the south of the city, near the Monument to the Battle of the Nations.
The planned economy of the German Democratic Republic, however, was not kind to Leipzig. Before the Second World War, Leipzig had developed a mixture of industry, creative business (notably publishing), and services (including legal services). During the period of the German Democratic Republic, services became the concern of the state, concentrated in East Berlin; capitalist business moved to West Germany; and Leipzig was left only with heavy industry. To make matters worse, this industry was extremely polluting, making Leipzig an even less attractive city to live in. Between 1950 and the end of the German Democratic Republic, the population of Leipzig fell from 600,000 to 500,000.
In October 1989, after prayers for peace at St. Nicholas Church, established in 1983 as part of the peace movement, the Monday demonstrations started as the most prominent mass protest against the East German government. The reunification of Germany, however, was at first not good for Leipzig. The centrally planned heavy industry that had become the city's specialty was, in terms of the advanced economy of reunited Germany, almost completely unviable, and closed. Within only six years, 90% of jobs in industry had vanished. As unemployment rocketed, the population fell dramatically; some 100,000 people left Leipzig in the ten years after reunification, and vacant and derelict housing became an urgent problem.
Starting in 2000, an ambitious urban-renewal plan first stopped Leipzig's population decline and then reversed it. The plan focused on saving and improving the city's attractive historic downtown area and particularly its early 20th-century building stock, and attracting new industries, partly through infrastructure improvement. However, the renewal has led to gentrification of parts of the city and has not arrested the decline of Leipzig-East.
