Haven't we seen this movie before? It was called California Proposition 8.

Ted Richardson / AP
Steve Tanis, left, and his partner Rich Garraputa, both from Greensboro, N.C., walk toward the Noth Carolina Legislative Building after a rally against a state constitutional amendment that would say marriage between a man and a woman is the only domestic legal union in North Carolina, on Halifax Mall in Raleigh, N.C., Tuesday, Sept. 13. The N.C. Senate voted Tuesday to put the marriage issue to a vote in 2012. The men have been together for 13 years.

Ted Richardson / AP
L.F. Eason of Cary, N.C., looks up at his flag during a rally against a state constitutional amendment that would say marriage between a man and a woman is the only domestic legal union in North Carolina.

Ted Richardson / AP
Ashley Malinowski and Jacqui Kaluza, foreground, a couple from Raleigh, N.C., attend a rally against a state constitutional amendment that would say marriage between a man and a woman is the only domestic legal union in North Carolina.