[ifokiedoke]

To say the Nazis simply "used violence to seize power" is extremely reductive.

It's also well known that the Nazis were (at least monetarily) backed by Big Business & the wealthy capitalists at the time who were afraid of the rising popularity of Communism, as well as the threat of Soviet Russia. This included but was not limited to even American companies that happened to have offices in Germany (e.g. IBM). You can bet that money was used for anti-Semitic propaganda (which could deflect unhappiness towards the corporations to be aimed with the Jewish), and bringing this back to Free Speech, you can bet that this was allowed because of unmitigated free speech at the time.