>Plenty of violence happens in the world, both in response to speech and not, without being 'fascism'. Politically motivated violence is not synonymous with fascism

Correct we call that terrorism when it is to further your own political, religious, social, racial, or environmental views.

Domestic terrorism: Violent, criminal acts committed by individuals and/or groups to further ideological goals stemming from domestic influences, such as those of a political, religious, social, racial, or environmental nature.

https://www.fbi.gov/investigate/terrorism