It’s an American idiom, but take a moment to compare the term “creeping fascism” to “creeping capitalism.”  The former is used frequently in speech and writing, while the second is so absurd that it doesn’t make sense.  Why must fascism creep?  It creeps because fascism is a very foreign concept to most, as of writing, Americans.  Most people do not intuitively understand what fascism is, and neither do they agree with the principles of fascism.  I find this amusing because while Antifa – “against fascism” if I understand their public persona – routinely rallies against self-reliance, individualism, and moral absolutes; these are principles of capitalism – private ownership and a free market economy.  Conversely, fascism is exemplified by government control of the economy: public ownership and no economy.