Slavery is the abrogation or infringement of even one of the Unalienable Rights of one person. Any slavery system in the world would have to conceal its true basis in the ideal that all people do not deserve to be free, all people are not created equal and are not equal in potential, that race, color, creed, gender, or sexuality is privileged, and that all people are not endowed by any God with any form of special rights. Communism is slavery to the government and its agencies and institutions. Socialism is slavery to the government, its agencies and institutions, and the corporations in league with that government and its people through contractual relationship.
Democracy is slavery to the majority.
Anarchy is slavery to the individual.