Definition.com
Polygamy is, for the feminist, to be opposed on account that the practice accords with male self-interest, and is readily admitted by its practitioners to be a means of controlling women.
Definition.com
Polygamy is, for many liberals, a system that results in the subjugation of women to men's desires for more wives and restrains individual rights.
Definition.com
Polygamy is harmful to the individuals who are participating therein. Multiculturalism notwithstanding, it perpetuates a dangerous structure of oppression that systematically threatens individual liberties.
