Overview : the complex issue of same-sex marriage / Four decades of LGBT activism paved the way for marriage equality / American politics have shifted significantly since the 1990s / Unequal treatment led the Supreme Court to overturn DOMA / State marriage laws vary widely following DOMA's demise / Young people helped shift public opinion on same-sex marriage / Gay marriage around the world / Yes : same-sex marriage benefits society in many ways / Same-sex marriage strengthens the institution of marriage / Same-sex marriage furthers the American values of freedom and equality / Marriage equality reduces dependence on government social services / What's wrong with letting same-sex couples "marry?" / Same-sex marriage weakens the institution of marriage / Same-sex marriage perpetuates systemic injustices / Overview : gay couples weigh financial options that accompany marriage / Same-sex marriage protects families and children in many ways / There is no scientific evidence that same-sex marriage harms children / Children in same-sex households are healthier than their peers / Same-sex marriage is not good for families and children / Children pay a lifelong emotional price for same-sex parenting / Gay marriage, then group marriage? / Same-sex marriage has negative consequences for religious liberty / Same-sex marriage does not impact religious freedom / Beyond gay marriage-- is the LGBT movement walking down the aisle to nowhere? / Same-sex marriage is good for the economy / Same-sex marriage does not help the economy / Marriage equlity is important for transgender people