The USA has broadened the base for its own lumpen, by turning the whole bottom 80% into a lumpen, that willingly supports a hyper-nationalistic and imperialistic propaganda and war-machine, both domestically and internationally.
The 80% USA lumpen's support for absurd government policies (poor education, no health, no public safety, multiple wars) goes consistently against the lumpen's own justifiable interests (that would logically be “good education, adequate public health, and reasonable security, both internally and internationally).
Additionally, the very bottom of the 80% has absolutely no political or industrial significance whatsoever, which differs somewhat from Nazi-Germany's lumpen, or the Italian fascists' “camicie nere”, who where on the bottom but were somewhat useful for the regime when needed to push for mass demonstration at night with torches and terror.
The USA very bottom are toothless poor people, living in incest and bestiality in the mountains, with self-regulating militia, running drugs and guns, also often ending up in the USA army because of logical economic necessity, and often homeless and insane, good for the government only in order to show to the “paycheck-to-paycheck” USA Middle-Class-Poor and slaves how bad things can go if they do not “behave”. A well planned policy of social terror and planned fear.
The USA has succeeded in creating a system of massive exploitation where the exploited does not complain, but happily and irrationally supports the exploiters.