Only a handful of states and the District of Columbia allow marriage equality. In each, the decision for legalizing gay marriage has been extremely controversial, pitting gay and lesbian families and grassroots advocacy groups against well-funded conservative organizations and religious leaders. Some states have legalized same-sex marriage through the legislative process, while in other states the high court has ruled in favor of legalizing gay marriage. Voters in two states, Maine and California, overturned legal and legislative decisions (respectively) allowing same-sex marriage. In fact, in every state where same-sex marriage was put to a popular vote, citizens ruled against it. […]