No country in the world has ever allowed unrestricted free speech, find me a country where at least one of the following is not a crime:

• Knowingly cause unnecessary panic, e.g. Screaming FIRE in a cinema
• Lie about someone causing them harm, e.g. say you saw them murder someone during a trial when you weren’t anywhere near the scene.
• Publicly plan an assassination or similarly directly threat someone in a credible manner.
• Draw/write/or reproduce in any manner copyrighted material.
• Disclose secret government documents.

Fully unrestricted freedom of speech is not possible unless we radically change the way our society is structured so that there’s no privacy or private property anymore. Until then some speech will have to be restricted, might as well include any speech related to fascism as it falls within several of the categories above.