”President Paul von Hindenburg appointed Hitler chancellor of Germany. Shortly thereafter, a fire broke out in the Reichstag building in Berlin, and authorities arrested a young Dutch communist who confessed to starting it. Hitler used this episode to convince President Hindenburg to declare an emergency decree suspending many civil liberties throughout Germany, including freedom of the press, freedom of expression, and the right to hold public assemblies. The police were authorized to detain citizens without cause.”
From How Did Hitler Happen? from the National WWI Museum | New Orleans