Nazism and other German nationalist movements were repressed early on by (generally communist) mob violence and later on by the state. That led directly to the rise of brownshirts (to counter the mob) and the radicalization of the Nazis - when people see that their belief system as being oppressed by the law, some of them conclude that when legitimate paths to power are denied, violence is justified.
The Coming of the Third Reich by Richard J Evans covers the rise of the Nazis in great detail, and it didn't happen because Nazis were going around with hate speech.
This has been one of the many justifications for free speech for a long time. In general, I think the "but Nazis!" argument against free speech should be viewed with immense suspicion - it basically boils down to a pretty serious antidemocratic sentiment; you can't let people talk, because then they might convince the plebs to vote for Nazis.
Nazism and other German nationalist movements were repressed early on by (generally communist) mob violence and later on by the state. That led directly to the rise of brownshirts (to counter the mob) and the radicalization of the Nazis - when people see that their belief system as being oppressed by the law, some of them conclude that when legitimate paths to power are denied, violence is justified.
The Coming of the Third Reich by Richard J Evans covers the rise of the Nazis in great detail, and it didn't happen because Nazis were going around with hate speech.
This has been one of the many justifications for free speech for a long time. In general, I think the "but Nazis!" argument against free speech should be viewed with immense suspicion - it basically boils down to a pretty serious antidemocratic sentiment; you can't let people talk, because then they might convince the plebs to vote for Nazis.