Lumpenproletariat and Unemployment

In some passages, Marxists include the chronically unemployed among the Lumpenproletariat, presumably on the grounds of non-productivity.  However, as contemporary events evince, unemployment can be a consequence of Capitalists hoarding their accumulated wealth, rather than, as Smith optimistically projects, redistributing it, e. g. via investments, one remedy for which has been the Keynesian policy of government picking up that slack.  Thus, it may only be because Marxist analysis is inadequate to some varieties of victimization under Capitalism, that in the supplanting of the latter by Socialism, some members of the Lumpenproletariat are transformed from indifferently neglected to methodically marginalized.