This article by Paul Craig Roberts is really a
must read. Not long, lots of relevant history.
Dictatorships seldom appear full-fledged but emerge piecemeal. When Julius Caesar crossed the Rubicon with one Roman legion he broke the tradition that protected the civilian government from victorious generals and launched the transformation of the Roman Republic into the Roman Empire. Fearing that Caesar would become a king, the Senate assassinated him. From the civil wars that followed, Caesar’s grandnephew, Octavian, emerged as the first Roman emperor, Caesar Augustus. Two thousand years later in Germany, Adolf Hitler’s rise to dictator from his appointment as chancellor was rapid. Hitler used the Reichstag fire to create an atmosphere of crisis. Both the judicial and legislative branches of government collapsed, and Hitler’s decrees became law. The Decree for the Protection of People and State (Feb. 28, 1933) suspended guarantees of personal liberty and permitted arrest and incarceration without trial. The Enabling Act (March 23, 1933) transferred legislative power to Hitler, permitting him to decree laws, laws moreover that "may deviate from the Constitution."