Fascism is Imperialism turned inwards.

Fascism is capitalism in decline.

Both of these quotes get attributed to Lenin but I think only the second is.

They are essentially equivalent though. Imperialism is a requirement of capitalism and the methods capitalist use to oppress the third world get turned inward on the imperial core. You will see ICE use the same methods the IDF has used in the west bank and Gaza. These were training grounds for Fascist oppression and specifically in methods of crowd control.