Dropping the Habsburg name "Ferdinand", it designated itself Charles University, while the German university was not named in the document, and then became officially called the German University in Prague (). In 1921 the German-speaking Bohemians considered moving their university to Liberec (), in northern Bohemia. In 1930, about 42,000 inhabitants of Prague spoke German as their native language, while millions lived in northern, southern and western Bohemia, in Czech Silesia and parts of Moravia near the borders with Austria and Germany. In October 1932, after Naegle's death, the Czechs started again a controversy over the insignia. Ethnic tensions intensified, although some professors of the German University were members of the Czechoslovak government. Any agreement to use the insignia for both the universities was rejected. On 21 November 1934, the German University had to hand over the "insigniae" to the Czechs. The German University senate sent a delegation to Minister of Education Krčmář to protest the writ. At noon on 24 November 1934, several thousand students of the Czech University protested in front of the German university building. The Czech rector Karel Domin gave a speech urging the crowd to attack, while the outnumbered German students tried to resist. Under the threat of violence, on 25 November 1934 rector (1873–1951) handed over the "insigniae". These troubles of 1934 harmed relations between the two universities and nationalities. The tide turned in 1938 when, following the Munich Agreement, German troops entered the border areas of Czechoslovakia (the so-called Sudetenland), as did Polish and Hungarian troops elsewhere. On 15 March 1939 Germans forced Czecho-Slovakia to split apart and the Czech lands were occupied by Nazis as the Protectorate of Bohemia and Moravia. "Reichsprotektor" Konstantin von Neurath handed the historical "insigniae" to the German University, which was officially renamed "Deutsche Karls-Universität in Prag". On 1 September 1939 the German University was subordinated to the Reich Ministry of Education in Berlin and on 4 November 1939 it was proclaimed to be "Reichsuniversität". On 28 October 1939, during a demonstration, Jan Opletal was shot. His burial on 15 November 1939 became another demonstration. On 17 November 1939 (now marked as International Students' Day) the Czech University and all other Czech institutions of higher learning were closed, remaining closed until the end of the War.