In Sinclair Lewis' novel "It Can't Happen Here," the author critiques the political environment of America, emphasizing how easily the populace can transition from fervent enthusiasm to extreme subservience. He points out the unsettling capacity of Americans to become overly emotional, which can lead to a dangerous level of support for charismatic leaders, as exemplified by Huey Long's rise to power. The portrayal serves as a cautionary tale about the fragility of democratic values in the face of populism.

Lewis highlights the duality in American society, where emotional fervor can quickly turn to blind loyalty, creating conditions ripe for dictatorial rule. This observation underscores a broader warning about political engagement and the need for vigilance against authoritarianism. The novel suggests that the very traits that make Americans passionate can also render them susceptible to manipulation and control by those who seek power without accountability.