You can’t have “marriage equality” for homosexuals and deny the same “right” for polygamists.
Actually, yes they can. The objective isn’t about marriage at all: it’s all about provoking and working to criminalize the true religions that follow the God of Abraham. Polygamy wouldn’t help in criminalizing traditional christianity to the extent that homosexual activism ever has. An non-ideal as polygamy may be, even polygamy recognized gender differences, and parental differences. The sexual push nowadays is all about breaking down respectful gender recognition, and replacing it with chaos.