Let's use the definition from Wikipedia as a guide:
Fascism is characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural social hierarchy, subordination of individual interests for the perceived interest of the nation or race, and strong regimentation of society and the economy.
Opposed to communism, democracy, liberalism, pluralism, and socialism, fascism is at the far right of the traditional left–right spectrum.
Let's start with the last point: "fascism is at the far right of the traditional left–right spectrum."
I'm partial to the circular model rather than the linear model that has two endpoints. The linear model puts fascism at the far-right edge and communism at the far-left edge. In the circular model, fascism and communism are neighbors, separated by anarchy. That's why I'm uncomfortable with a model that suggests that fascists can only exist on the right.
Taking the characteristics of fascism one by one:

I'll insert Antifa here as a quasi-paramilitary arm of the left, despite being "rag-tag" youth with homemade gear, masks, skateboards, and backpacks. Still, they are coordinated, mobile, and very violent.
This one might take a little bit of table-setting...
This is another one that requires "interpretation."
Jews side with the left, and it's the left who is attacking them.
-PJ
Was my answer not what you expected, or not worth at least acknowledging that I took the time to answer you?
Why did you bother asking me if you were going to ignore me afterwards?
-PJ