Progressivism is a modernist Protestant utopianism that believes in the perfectibility of mankind and believes the U.S. should be the vanguard bringing about the perfection of humanity.Which explains why progressives find Marxism simpatico. It too is modern utopianism (without the religion), which seeks the perfectibility of human life via economic planning.
My view: both fail for the same reason ... humans are stubbornly imperfect and insist on remaining so. You might want to read the whole column.