"It is the American vice, the democratic disease which expresses its tyranny by reducing everything unique to the level of the herd"

In this quote, Henry Miller is slamming a flaw he sees in American society. He refers to it as a "vice" and a "disease," recommending that it is a negative and damaging element of American culture. This defect, according to Miller, is rooted in the idea of democracy, which he believes causes a form of tyranny. He argues that this tyranny manifests itself by removing away uniqueness and uniqueness, reducing whatever to a common and uniform level. To put it simply, Miller thinks that American society values conformity and homogeneity over individuality and diversity, and this is a hazardous pattern that must be recognized and resolved.