Government programs that involuntarily transfer or redistribute wealth are immoral because they violate the individual’s natural right to order his own actions and possessions. Theft is immoral. Likewise, theft via the government is immoral.
Karl Marx and Thomas Jefferson highlight the differences between collectivism and individualism. The philosophy of collectivism regards the individual as a means to society’s ends and is thus immoral, whereas individualism respects the freedom and autonomy of each member of society.
“From each according to his ability, to each according to his need.” – Karl Marx, 1875
“A wise and frugal Government, which shall restrain men from injuring one another, shall leave them otherwise free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned.” – Thomas Jefferson, 1801