He mentions Finland and Lapua movement as an example and it's correct, but there are others.

United Sates:

There was Ku Klux Klan (KKK) in the south.

In the 1930s fascism became very popular in the US. 25% of Americans listened regularly fascist radio program from father Charles Coughlin. "It is fascism or communism. We are at the crossroads. I take the road to fascism.” Large number of "shirts" organizations (fascists with different shirt colors, silver, black, green, .. ). In the Congress America First Committee, while not a fascist organization itself, included several core members with antisemitic and pro-fascist sympathies.