Lumpenproletariat

[Rihanna]

(n) 1. A section of the population in [capitalist society] that is [deprived] of a role in production.
(n) 2. The most impoverished section in capitalist society comprising mostly of vagrants, vagabonds, criminals, welfare recipients, drug addicts, etc.
(n) 3. A non-revolutionary current in capitalist society, in [Marxist] terms.

[Tanya Shivari]

(especially in Marxist terminology) the unorganized and unpolitical lower orders of society who are not interested in revolutionary advancement.